SoarerCentral: Archive through August 22, 2008

SoarerCentral General Soarer Chat BFI Choices & Tests Archive through August 22, 2008

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Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2033
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Monday, May 19, 2008 - 11:22 pm, by: Mike Beck (Gold_40gt)

Ive been doing a fair bit of reading of Peter Scott's Planet Soarer pages again about the BFI's, pressure drop comparisons and how certain filter types compare to others on a dyno. Done it a few times over the years, its still interesting to read over & over!

It's really got me thinking about what I should do with my V8's factory intake before I rush into and do something I should have done differently.

I think It would be ideal to do some pressure loss testing with a manometer like Peter did to find out what the gains and changes are, starting from factory specs like Peter has done and go from there so I can grasp my own perspective on the matter.

There are three different style BFI's I would like to try out eventually, to make it easy here are pictures of the three types, each will be supported by the same top cover and sealing to the side and under the headlight to keep the air directing into the filter, not escaping into the engine bay.

1)

Basic Full front cut out, neat and tidy with new Genuine Toyota Filter

2)

Peter Scott's BFI3 with the three Bell mouth intakes and factory lower intake hole.

3)

My BFI with a full front cut out, MDF backing panel with 3" hole with an Apexi Power Intake filter attached. - This particular one I recently did for my 3l got me thinking about this a couple of months ago when Daniel Clarke brought up the point about "breathing through an open faced 200x200( not sure of size) BFI, you've restricted that back down to 80mm or 100mm opening" So from that I'm determined to get some hard data to work out whats actually happening.

It will be interesting to see how they compare with pressure testing. Plus, if I have the chance to do back to back testing with the three BFI's on a dyno that will hopefully confirm what has the most flow, leading to power increase or decrease. I think it would be ideal to have a forth intake, a factory air box with the snorkel to compare act as a control.

Sure the differences might be minimal as some of Peter's research showed but I'm keen myself to determine whats the most effective route to go for.

Ill keep this update with my progress. First step is to find some factory V8 air boxes from wrecked V8's...

Joshua Rao
DieHard
WA
JZZ30 vvti GT-L & JZZ31(For Sale)

Posts: 641
Reg: 09-2006

Rating: N/A
Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 02:14 am, by: Joshua Rao (Soaren1)

Sounds awesome. I think I'm gonna wait for your results before I massacre my airbox. Was planning number 2.

Blake Gloyn
TryHard
manawatu
soarer JZZ30 TT

Posts: 285
Reg: 02-2006

Rating: N/A
Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 10:44 am, by: Blake Gloyn (Blakenz)

mike, the problem with dyno testing is that the BFI shows most gains at open road speeds. i have proven, years ago, that adding a cold air ram effect intake to my soarer yielded 1kw on the dyno, but 25rwhp on the road. so the manometer is the way to go. but enlist the help of a friend. no point crashing during testing!!!

Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 9338
Reg: 11-2004

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Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 11:41 am, by: Peter Nitschke (Pen)

Gary and I did some road tests in his TT a couple of years back. Manometer showed that the filter was still the biggest factor in reducing pressure drop. Other variations on the BFI had such small differences as to be inconclusive.

I would suggest do 1) for simplicity, then look for gains elsewhere, eg exhaust and a chip.

Steven Anderson
TryHard
NSW
UZZ31 Manual

Posts: 265
Reg: 05-2006

Rating: N/A
Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 12:37 pm, by: Steven Anderson (Cusscuss)

Blake Gloyn wrote on Tuesday, May 20, 2008 - 10:44 am:
mike, the problem with dyno testing is that the BFI shows most gains at open road speeds. i have proven, years ago, that adding a cold air ram effect intake to my soarer yielded 1kw on the dyno, but 25rwhp on the road. so the manometer is the way to go. but enlist the help of a friend. no point crashing during testing!!!

How exactly did you 'prove' that. 25rwhp is a big claim.

Keenan Edinger
TryHard
WA
UZZ31 GT-L V8

Posts: 276
Reg: 02-2006

Rating: N/A
Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 03:02 pm, by: Keenan Edinger (Keenan585)

Thanks for the info Mike, will be very interested to watch your progress and see the results. Like Josh, I'm looking to do something with the box too. Cheers.

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2034
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 03:09 pm, by: Mike Beck (Gold_40gt)

Yeah, Well I was going to rush in and do what I did on my UZZ30 and Celsior for my UZZ31, as shown in picture 1.

But Id always wanted to work out how it compared to the other BFI's and the one I made up with an Apexi filter (3) to what had the best performance in regards to making positive pressure through the air box at wide open throttle

Im still putting my money on number one, easiest and appears to make the most sense... but with amazing claims held by the Apexi's 'special' funnel design to assist with high flow, it will be interesting to see if it works better or worse than the factory filter!

Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 3489
Reg: 03-2006

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Votes: 0 (Vote!)

Tuesday, May 20, 2008 - 11:19 pm, by: Daniel Clarke (Dieseltrain)

Steven Anderson wrote on Tuesday, May 20, 2008 - 12:37 pm:
How exactly did you 'prove' that. 25rwhp is a big claim.

Blake DRag races his car so im guessing he picked up some decent MPH and ran those back through a Moroso calculator or something similar to work out the differences?

Blake Gloyn
TryHard
manawatu
soarer JZZ30 TT

Posts: 287
Reg: 02-2006

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Wednesday, May 21, 2008 - 10:56 am, by: Blake Gloyn (Blakenz)

Daniel and stephen i did before and after tests with a G-tech, which has proved to be very consistent at calculating rear wheel horsepower( when accurate info is factored in.. correct weight, flat road, a number of passes,similar temp etc). So i am not making any " big claim ", just re stating the results of my soundly based tests. Please note the 25rwhp gain is with a K&N panel filter, which flows more than the standard one(not a big claim- i had them flow tested) Its not hard to believe that a standard jzz30 car produces 25 less rwhp than the same car with a well set up BFI accelerating from 50-100 km/hour on the open road. the stock factory air box is restricted,and the 'ram air effect' of a well implemented BFI really helps on a turbo car.

Steven Anderson
TryHard
NSW
UZZ31 Manual

Posts: 267
Reg: 05-2006

Rating: N/A
Votes: 0 (Vote!)

Wednesday, May 21, 2008 - 07:39 pm, by: Steven Anderson (Cusscuss)

Blake Gloyn wrote on Wednesday, May 21, 2008 - 10:56 am:
Daniel and stephen i did before and after tests with a G-tech, which has proved to be very consistent at calculating rear wheel horsepower( when accurate info is factored in.. correct weight, flat road, a number of passes,similar temp etc). So i am not making any " big claim ", just re stating the results of my soundly based tests. Please note the 25rwhp gain is with a K&N panel filter, which flows more than the standard one(not a big claim- i had them flow tested) Its not hard to believe that a standard jzz30 car produces 25 less rwhp than the same car with a well set up BFI accelerating from 50-100 km/hour on the open road. the stock factory air box is restricted,and the 'ram air effect' of a well implemented BFI really helps on a turbo car.

Id say most of your gains are due to 2 things
1) Opening up the airbox
2) Getting cold air into the airbox

The K&N and 'ram air' are fairly negligible considering the AFM is the most restrictive part of the intake after the airbox has been hacked to bits. Especially considering a ram air effect has much less impact on a turbo car than a n/a one.

Did you do the tests back to back without moving the gtech?

Joshua Rao
DieHard
WA
JZZ30 vvti GT-L & JZZ31(For Sale)

Posts: 648
Reg: 09-2006

Rating: N/A
Votes: 0 (Vote!)

Thursday, May 22, 2008 - 02:34 am, by: Joshua Rao (Soaren1)

Blake did your BFI resemble pic 1, 2 or 3 from above. Or did you do Peter Scotts BFI1, 2 or 3?

Blake Gloyn
TryHard
manawatu
soarer JZZ30 TT

Posts: 288
Reg: 02-2006

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Thursday, May 22, 2008 - 11:54 am, by: Blake Gloyn (Blakenz)

1) the airbox wasn't opened up
2) the factory snorkel on the airbox ensures that the motor doesn't suck hot air.
3) jzz30s dont have AFM as a restriction
4)no,the g tech was turned off while i drove to town and had the workshop install the SS inductions fibreglass cold air induction kit. the car was dynoed. after i got home,i waited for the same weather conditions, i went to the same bit of road,and then zeroed the G-tech, according to instructions.Thats the beauty of the g-techs.. correct setting up ensures repeatable tests.
This kit has been removed(gets in the way of a front mount intercooler) and now is the basis of the SSS cold air intake available in U.K.
My BFI now looks like pic 1, but has shields above and beside the airbox to force air into it. The air that used to go through the side mount intercooler, now can no longer flow into the wheel well, it has to go up into the air filter box.

Joshua Rao
DieHard
WA
JZZ30 vvti GT-L & JZZ31(For Sale)

Posts: 661
Reg: 09-2006

Rating: N/A
Votes: 0 (Vote!)

Thursday, May 22, 2008 - 01:59 pm, by: Joshua Rao (Soaren1)

Cool, any pics blake?

Blake Gloyn
TryHard
manawatu
soarer JZZ30 TT

Posts: 293
Reg: 02-2006

Rating: N/A
Votes: 0 (Vote!)

Saturday, May 24, 2008 - 11:06 am, by: Blake Gloyn (Blakenz)

no pics josh sorry. i am computer challenged and don't understand how to post images. I can attach to e mails, but posting on forums is for some reason, weird, and i can never understand the instructions.

Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 9379
Reg: 11-2004

Rating: N/A
Votes: 0 (Vote!)

Saturday, May 24, 2008 - 11:38 am, by: Peter Nitschke (Pen)

Blake, click the paper clip icon above the post edit window, the locate your pic. The main thing is the size limitations, of 800 pixels wide and 150Kb file size.

Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 353
Reg: 12-2007

Rating: N/A
Votes: 0 (Vote!)

Saturday, May 24, 2008 - 04:07 pm, by: Glen Muller (Doom_and_gloom)

I came up with a kick arse idea for a different BFI, but I can't be bothered explaining it. I'm looking for a stocko airbox for a V8 so I can just do it and post the pictures.

John Khanh
TryHard
NSW
UZZ31 V8

Posts: 150
Reg: 03-2007

Rating: N/A
Votes: 0 (Vote!)

Wednesday, June 04, 2008 - 08:56 pm, by: John Khanh (Bigjohn)

Glen, I've got a stock air box if you want it... PM me with an offer.

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2098
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Wednesday, June 18, 2008 - 08:43 pm, by: Mike Beck (Gold_40gt)

Well Guys, after testing type 1 in the picture and then type 2, I have to say the Factory filter with a full cut out works best hands down compared against the Apexi filter....

I need not to test really as the results can be felt in the acceleration easily, with the open face BFI and factory filter the acceleration was absolutely brutal compare to stock, smoother gear changes and a much more eager revving motor - Absolutely love it.... Oh the memories of my old 30 are coming back! HAHA

On the other hand the Apexi was disappointing from trying it out on the car, it felt restricted like a half way point between having a factory intake and the full face cut out BFI I have now. Acceleration was better than stock, but I could feel it was not as good as the factory filter BFI, I suspect thats due to the fact the filter element is on the sides of the cone filter and the hole is only 80mm in Diameter rather than the full flat face 200x200mm filter (approx)

I will get around to making up a BFI3 Like Peter Scott did a while back and test that gains the BFI1 I have now with a manometer and find out whats best between them, I may test the Apexi setup some time to see a hard data difference but for now I'm convinced it is a waste of time.

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2099
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Wednesday, June 18, 2008 - 08:44 pm, by: Mike Beck (Gold_40gt)

Glen Muller wrote on Saturday, May 24, 2008 - 04:07 pm:
I came up with a kick arse idea for a different BFI, but I can't be bothered explaining it. I'm looking for a stocko airbox for a V8 so I can just do it and post the pictures.

Glen, did you make up this BFI you had an idea for in the end?

Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 419
Reg: 12-2007

Rating: N/A
Votes: 0 (Vote!)

Friday, June 20, 2008 - 01:37 pm, by: Glen Muller (Doom_and_gloom)

I haven't got around to it yet, since I probably need to remove the front bar. I don't think I'll need the new airbox either... just utilise the one I have with the big fat hole in the front.

I hope to have it done in the next week or so, since dyno day is approaching!

Mike Beck wrote on Wednesday, June 18, 2008 - 08:43 pm:

I need not to test really as the results can be felt in the acceleration easily, with the open face BFI and factory filter the acceleration was absolutely brutal compare to stock, smoother gear changes and a much more eager revving motor - Absolutely love it.... Oh the memories of my old 30 are coming back! HAHA

I know that feeling! When I butchered my airbox and went for a drive, I even heard a difference in the engine note. Under full noise, I can also hear the air sucking in at the front of the car if I have the windows down. Love it!

Also blows people away when they go "hey man, do you have a pod on your car? Sure sounds like it" and you reply with a fat "hell no! It's a Sumkunt Homejobs DIY intake! And it does sticky brown stuff all over your crappy $300 intake kit!" Pity about the pathetic rear-wheel output of the humble UZZ31 though... it badly needs some forced induction.

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2104
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Friday, June 20, 2008 - 05:03 pm, by: Mike Beck (Gold_40gt)

Glen Muller wrote on Friday, June 20, 2008 - 01:37 pm:
I hope to have it done in the next week or so, since dyno day is approaching!

Cool, keep any news posted in this treat with the results!

Yeah the difference in the engine sound is one of the biggest changes too, sounds lovely.... Almost an orchestrated symphony, Music to my ears every time so I was compelled to make a short video of the sound under short bursts of full acceleration on the Highway, some with the window up and down.

Heres it is.........

Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 420
Reg: 12-2007

Rating: N/A
Votes: 0 (Vote!)

Friday, June 20, 2008 - 10:16 pm, by: Glen Muller (Doom_and_gloom)

I'm scrapping my idea. I think it's a waste of time... for the money I'll spend on sealing up the intake chambers, I'm just going to do that instead. I bought a whole stack of old booze advertising signs for 50c a pop (a few for the wall in the home bar, a couple for the BFI!). I'll still keep you posted on how it goes... I'll be doing it tomorrow or Sunday.

If anyone is going to the Melbourne dyno day next week and needs some corflute signs for any reason, 50c a pop and I can bring them with me down to the venue. gdmuller@students.latrobe.edu.au if you need some... you can't make them for that price. They're 890 x 600.

Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 421
Reg: 12-2007

Rating: N/A
Votes: 0 (Vote!)

Friday, June 20, 2008 - 10:26 pm, by: Glen Muller (Doom_and_gloom)

By the way. Man I love the roar of a V8 Soarer... have you just unbolted the rear muffs and put pipe in there Mike?

I'm driving around with no rears at the moment. I'm going to put them back on for the dyno, then when I have some spare cash have the mids removed and replaced with pipe. Next dyno day I'll see what the difference in rwkw is!

I'd really like to try out some 2.5" inlet/outlet Thrush double offset mufflers when I have the spare money. Those things are made for hot rods and muscle cars, and are synonymous with that muscle car tone. They're built on Magnaflow technology at a lower cost, so why the hell not?

Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 3616
Reg: 03-2006

Rating: N/A
Votes: 0 (Vote!)

Saturday, June 21, 2008 - 01:49 am, by: Daniel Clarke (Dieseltrain)

Sounds Nice Mike

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2106
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Saturday, June 21, 2008 - 07:05 am, by: Mike Beck (Gold_40gt)

Glen Muller wrote on Friday, June 20, 2008 - 10:26 pm:
By the way. Man I love the roar of a V8 Soarer... have you just unbolted the rear muffs and put pipe in there Mike?

I did indeed, I actually had these made about a year ago when I had the Celsior using old flanges from my UZZ30's mufflers under the house! Since then they also fitted on my 3.0GT....... And NOW been fitted to my Limited! Cant complain at all!

I do plan to do a nice full system one day but for a quick bang for buck upgrade these are great, It does sound nice though better than I had previously thought, I might take a quick video of how it sounds stationary later today.

Daniel Clarke wrote on Saturday, June 21, 2008 - 01:49 am:
Sounds Nice Mike :-)

Thanks Daniel

. Although Im not too much of a fan giving it any more poke than shown on public roads, was fairly considerate, but finally just down south from my city a full track is being constructed right next to the dragway. Shall be superb! For once it will give a chance to safely, see how the car actually handles and performs, the only way to really enjoy the cars performance these days, which is fair enough.

Matthew Sharpe
Goo Roo
North Island
JZZ31

Posts: 3577
Reg: 10-2005

Rating: N/A
Votes: 0 (Vote!)

Sunday, June 22, 2008 - 07:25 am, by: Matthew Sharpe (Madmatt)

Ha, 137! Naughty!

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2111
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Sunday, June 22, 2008 - 08:10 am, by: Mike Beck (Gold_40gt)

Hehe

I can honestly say I havent been much faster than that in both of my last 2 soarers. I dont even think my 3.0GT got over 145 down the 1/4 Mile.

Rather a shame but...... the risk is too great these days, even if the car is fine and the driving ability is fine, the police risk and other drivers on the road is the main factor to worry about so you have to ask your self is it worth it - Id rather hang on to my cars & keep them in one piece!

At the end of the day a track is the way to go, & the 1/4, actually popping down to Champion Dragway on 6th of July for a private company day I was invited to (Please don't rain that day!)

Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 422
Reg: 12-2007

Rating: N/A
Votes: 0 (Vote!)

Monday, June 23, 2008 - 01:16 pm, by: Glen Muller (Doom_and_gloom)

6th July is my birthday, so I should get to scream my Soarer around on that day! But I don't see the point in drags... I'm a wheel-to-wheel racing kinda dude, and I find bikes way more fun than cars.

But hey, gotta love the Top Doorslammers and Nitro Funnycars.

Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 423
Reg: 12-2007

Rating: N/A
Votes: 0 (Vote!)

Tuesday, June 24, 2008 - 12:51 pm, by: Glen Muller (Doom_and_gloom)

I have BFI #1 from the pictures up there, and I sealed up the compartment under the headlight/put in a barrier at the side of the intake, and my verdict is:

SH1T! Between 60 - 100km/h in 2nd, the Soarer got damn angry. It's not searching for the air anymore, you can really hear it sucking in hard. Nice cold air going directly into the filter, produces sharp acceleration in the mid to top range.

My steps were:

1. remove airbox and that crappy factory duct

2. chop out front of airbox - I sealed the rough edges with a creme brulee blowtorch instead of filing them down. No chance of plastic bits!

Drove around with it like this for a while. I've had 3 different lids so far, trying different stuff. I'm still not happy, but I can't find the materials I need here in Bendigo so it's going to have to wait.

3. got hold of some corflute sheets and sealed up the headlight chamber.

Performance? Leaps and bounds.
Economy? Awesome. Coming back from a job interview this morning, 6 minute trip - averaged 9km/L for the first 3 mins and 7km/L for the second 3 mins, town driving with a max speed limit of 70. That included stomping on the loud pedal from the lights a couple of times too!

Case closed - happy me!

Sean Routledge
Tinkerer
Victoria
V6 Ecotec

Posts: 32
Reg: 07-2008

Rating: N/A
Votes: 0 (Vote!)

Sunday, August 10, 2008 - 01:56 pm, by: Sean Routledge (Stircrazy)

How much roughly for a BFI installed, and full exhaust system? Was going to buy soarer with everything done, but might want to do it all myself? Rough price for each fitted? Thanks

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2325
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Sunday, August 10, 2008 - 03:20 pm, by: Mike Beck (Gold_40gt)

Sean,

A BFI done 100% will set you back a few dollars for a Jig saw blade, and probably $10-30 for some heat proof plastic to make up the size and top panels to keep the hot air out. Plus another few dollars on bolts and washers to push the lip in behind the bumper down. Id say no more than $50 would have a nicely done BFI + $30 or so for a clean genuine filter!

Exhaust's can vary a lot. For a full system on a V8 with headers, resonators, and dual mufflers with stainless tips you would be looking at $1500-2000 easy.

Hope that helps.

Woops! I'd forgotten to the testing on the BFI type differences with a manometer! Been too busy lately to have the time... But spring time will be ideal to make up some other BFI boxes and try them all out. I'd like to know myself if the BFI3 is better than the full faced cut out!

Sean Routledge
Tinkerer
Victoria
V6 Ecotec

Posts: 34
Reg: 07-2008

Rating: N/A
Votes: 0 (Vote!)

Sunday, August 10, 2008 - 03:54 pm, by: Sean Routledge (Stircrazy)

what mods have been done to the soarer in the video? How much for a cold air intake? Sorry to be a pain....

Mike Beck
Goo Roo
New Zealand
Soarer Limited UZZ31 & Soarer 3.0GT JZZ31

Posts: 2326
Reg: 11-2005

Rating: N/A
Votes: 0 (Vote!)

Sunday, August 10, 2008 - 05:45 pm, by: Mike Beck (Gold_40gt)

Haha not being a pain at all! This is what the forum is about - asking questions.

The Video is just a BFI exactly like the first picture of this thread and no rear mufflers, instead replaced with 2" straight pipe. A lot more to be unleashed with a full exhaust and couple of other little things.

Hmmm, a Cold air intake with a pod filter I'd budget about $150-200 for one of those, a BFI is essentially a better performing, factory looking CAI, so your better off doing one instead. The BFI's tend to work best on V8 soarers, on a modified TT or single turbo soarer I don't think it matters as much.

But as far as I'm concerned the main advantage doing a BFI means the factory filter is retained so the air is always going to be filter properly, where as the majority of pod type 'performance' filters don't filter as well so you get a lot of dirt into your engine!

Hope that helps feel free to ask anything else too!

Daniel Lee
Goo Roo
Victoria
Soarer GT Limited UZZ31 V8

Posts: 1502
Reg: 07-2005

Rating: N/A
Votes: 0 (Vote!)

Sunday, August 10, 2008 - 08:02 pm, by: Daniel Lee (Son_gokou)

Sean,

I have the Cold Air Induction Kit from Maltech.

https://soarercentral.com/sc-forum/messages/21901/9186.html?1208166727

For the exhaust its depends what you want as Mike said.

The headers cost $550 and another few hundred dollars to fitted and also you needed to replaced the factory cats when getting the headers fitted.

This is my Soarer with no resonators and with the Rush Headers, Steel core Hi Flow Cats, 2.25" X-Pipe, straight through mufflers: