Soarer Central: Archive through January 09, 2007

Soarer Central Mechanical - TT General Mechanical Recommend me a cat Archive through January 09, 2007

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Daniel Czechowski
Goo Roo
Western Australia
Soarer GT-T

Posts: 2140
Reg: 07-2005

Rating: N/A
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Sunday, January 07, 2007 - 02:06 am, by: Daniel Czechowski (Dan)

Ok I've done a bit of searching, but still haven't been able to find what I'm after, or maybe I'm too drunk/tired who knows

Basically I need a good catalytic converter. I've just had Lew's dumps installed and have his mid pipe as well. Now the stock cat doesn't fit on the midpipe coz it's too small, and I wouldn't like to keep it anyway as it is probably the most restrictive part of the exhaust now.

I've read in some posts that some aftermarket hi flow cats are not that good, so just want your recommendation as to which cat I should buy if you know of good one or two. Cheers people!!!

Vinh Bui
Goo Roo
NSW
94 UZZ31 (V8) / 96 JZZ30 (TT)

Posts: 1524
Reg: 07-2005

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

Sunday, January 07, 2007 - 02:54 am, by: Vinh Bui (Hyudsjk)

Good ol' MetalCat is what I would get

Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8

Posts: 6800
Reg: 11-2004

Rating: N/A
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Sunday, January 07, 2007 - 04:17 am, by: Peter Nitschke (Pen)

http://soarercentral.com/cgi-bin/sc-forum/show.cgi?tpc=51875&post=145233#POST145233

http://rushimports.com.au/index.php?main_page=product_info&cPath=2&products_id=79

http://rushimports.com.au/index.php?main_page=product_info&cPath=2&products_id=78

Don Bagnall
Moderator
New Zealand
I have WAY less Soarers than Hayden :-(

Posts: 5469
Reg: 05-2005

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

Sunday, January 07, 2007 - 09:04 am, by: Don Bagnall (Baggs)

Go for a BIG cat

Michael Sztyk
TryHard
Victoria
1JZ-GTE Soarer TT

Posts: 124
Reg: 12-2005

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

Sunday, January 07, 2007 - 04:39 pm, by: Michael Sztyk (Sli1)

I was gonna recommend a Persian cat

Daniel Czechowski
Goo Roo
Western Australia
Soarer GT-T

Posts: 2142
Reg: 07-2005

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

Monday, January 08, 2007 - 10:22 am, by: Daniel Czechowski (Dan)

Hehe, cheers, will look at the links there and that Metalcat stuff.

Daniel Czechowski
Goo Roo
Western Australia
Soarer GT-T

Posts: 2144
Reg: 07-2005

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

Monday, January 08, 2007 - 12:08 pm, by: Daniel Czechowski (Dan)

Hey Lew, I forgot to check at home... what is the size of your midpipe?? Would anyone know, I would like to order a cat today, but don't want to wait till I get home.

Marius Hainal
TryHard
Victoria
TT manual

Posts: 115
Reg: 08-2005

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

Monday, January 08, 2007 - 12:40 pm, by: Marius Hainal (Torque)

So metalcat is the consensus for the Cat replacement ? Do you guys know top of you head what is the diameter of the stock piping ? I mean do I need a 2.5 or a 3" cat ? ( for stock TT I mean)

cheers

Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 1119
Reg: 03-2006

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

Monday, January 08, 2007 - 04:56 pm, by: Daniel Clarke (Dieseltrain)

only put a Metalcat on if your going aftermarket exhaust mate

Marius Hainal
TryHard
Victoria
TT manual

Posts: 116
Reg: 08-2005

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

Monday, January 08, 2007 - 10:01 pm, by: Marius Hainal (Torque)

And for stock exhaust I need ?

Thanks.

Hold on, what is the reasoning that the stock system cannot take advantage of a higher flowing cat ? Higher flow = faster gas = more psi on the other side as the wheels spin quicker, I am right?

It won't blow my socks of , but car is good as is... I just need a cat damnit, and not a live one , I already got one of those to kick.

Ben Socratous
Goo Roo
SA
I am the fibreglass/kevlar/carbonfibre king!

Posts: 1283
Reg: 07-2005

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

Monday, January 08, 2007 - 10:56 pm, by: Ben Socratous (Socrates)

Coz the rest of the stock system is more restrictive than the stock cat, or whatever the compliance fools put on. Stock zorst is really the soarers downfall!

Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8

Posts: 6806
Reg: 11-2004

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

Tuesday, January 09, 2007 - 02:19 am, by: Peter Nitschke (Pen)

Why not get a s/h stock cat from someone who has upgraded their exhaust?

Marius Hainal
TryHard
Victoria
TT manual

Posts: 118
Reg: 08-2005

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

Tuesday, January 09, 2007 - 07:50 am, by: Marius Hainal (Torque)

I don't put second hand •••• on my car, never ever. On any of my cars

OK; so if I want to get rid of the most restrictive part from exhaust as well, what is it; what is a "zorst" ?

And sice we're here, is there an exhaust shop in Melbourne you guys recommend to go and change the "zorst" and cat ? I might keep this car a couple more years, so I might as well think of some upgrades.

thanks

Aka Abedin
DieHard
NSW
TT

Posts: 620
Reg: 07-2005

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

Tuesday, January 09, 2007 - 09:37 am, by: Aka Abedin (Soarer_91tt)

Put it this way stock everything stock is restrictive (in most cases).

Get the whole exhaust replace at once and enjoy the psi rise. You will not look back.

One of the most value for money mod you can do to your soarer.

Shaun Stephenson
TryHard
Vic
Jzz30 TT & ST162

Posts: 255
Reg: 04-2006

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

Tuesday, January 09, 2007 - 09:59 am, by: Shaun Stephenson (Neonasty)

Ive got a Metalcat. 3" It looks to be good quality, its sitting on my floor in the bedroom. Polished chrome too, just what every cat that sits under a car needs.

Marius Hainal
TryHard
Victoria
TT manual

Posts: 119
Reg: 08-2005

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

Tuesday, January 09, 2007 - 10:02 am, by: Marius Hainal (Torque)

Thanks Aka; any issues with fuel cut and such from such a mod , will it boost too high ?

I am running 12 psi now stock; we had a debate a while back . Don't know why, but mine is running 12 psi instead of the stock 9-91/2. It has a stock ECU with no boost controller...

Daniel Czechowski
Goo Roo
Western Australia
Soarer GT-T

Posts: 2148
Reg: 07-2005

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

Tuesday, January 09, 2007 - 10:08 am, by: Daniel Czechowski (Dan)

Your dumps will be the most restrictive piece of your stock exhaust at the moment. Give Lew a call and get his dumps.

Marius Hainal wrote on Tuesday, January 09, 2007 - 07:50 am:
I don't put second hand •••• on my car, never ever. On any of my cars

Exhaust is just a pipe though... who cares if second hand or not.

Peter Nitschke wrote on Tuesday, January 09, 2007 - 02:19 am:
Why not get a s/h stock cat from someone who has upgraded their exhaust?

There will be one stock cat for sale soon to anyone interested

Aka Abedin
DieHard
NSW
TT

Posts: 621
Reg: 07-2005

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

Tuesday, January 09, 2007 - 10:14 am, by: Aka Abedin (Soarer_91tt)

Marius Hainal wrote on Tuesday, January 09, 2007 - 10:02 am:
Thanks Aka; any issues with fuel cut and such from such a mod , will it boost too high ?

I am running 12 psi now stock; we had a debate a while back . Don't know why, but mine is running 12 psi instead of the stock 9-91/2. It has a stock ECU with no boost controller...

Mate I didnt have a boost gauge before i installed my exhaust. But like you said most stock soarers boost 9-10 psi stock.

My question to you is your boost gauge accurate? I mean for a stock soarer to boost 12psi seems odd.

As for boost cut I wouldnt worry about it. From what i have read it cuts in around 14.7psi (give or take).

My car currently boosts at 12psi after just getting the exhaust and a pod. i am taking ti to the drags tomorrow night will let you know how I go with just those mods.

Aka Abedin
DieHard
NSW
TT

Posts: 622
Reg: 07-2005

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

Tuesday, January 09, 2007 - 10:15 am, by: Aka Abedin (Soarer_91tt)

Also check out Jeff Smiths profile. He has a LOT of mods and his natural boost is 13psi.

Marius Hainal
TryHard
Victoria
TT manual

Posts: 120
Reg: 08-2005

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

Tuesday, January 09, 2007 - 10:24 am, by: Marius Hainal (Torque)

I know, people got ticked off when I said it before. I checked the boost gauge versus a calibrated industrial gauge, and it holds true ( it did differ within 1 psi , but that was up in the 25+ psi range , at 12 psi was out less than .5psi, more like half a line and that means .25 ).

It goes like this:
Driving normally with just short bursts of acceleration with pedal to the metal it goes up to 10 psi. If I keep it there, especially in higher gears like 3rd or 4th, it does creep up to 12-12.5 depending on outside air temperature. Now in hot summer I don't get more than 11.5-12, in winter was about 12.5 .

Problem is it is hard to prove it , by the time I hit 12 psi I am way , WAY past the 80 legal limit

OK ;I made up my mind, I will install Jeff's dumps and put it in once and good.

Would dumps & cat change the noise, do I also need to change the mufflers ? I.e. are mufflers really restrictive or one could leave them on with just dumps , 3" down to cat and new high flow cat ?

Many thanks

Daniel Czechowski
Goo Roo
Western Australia
Soarer GT-T

Posts: 2150
Reg: 07-2005

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

Tuesday, January 09, 2007 - 10:47 am, by: Daniel Czechowski (Dan)

Marius Hainal wrote on Tuesday, January 09, 2007 - 10:24 am:
Would dumps & cat change the noise, do I also need to change the mufflers ? I.e. are mufflers really restrictive or one could leave them on with just dumps , 3" down to cat and new high flow cat ?

That's what I'm doing, my whole exhaust will be changed apart from the rear mufflers and the pipes to the cat... will let you know in a month when I get my car tuned how it goes. I just don't want a noisy car that's all...

EDIT: Oh, you'll also need a new 3" midpipe between the cat and dumps

Aka Abedin
DieHard
NSW
TT

Posts: 623
Reg: 07-2005

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

Tuesday, January 09, 2007 - 10:59 am, by: Aka Abedin (Soarer_91tt)

Marius Hainal wrote on Tuesday, January 09, 2007 - 10:24 am:
Would dumps & cat change the noise, do I also need to change the mufflers ? I.e. are mufflers really restrictive or one could leave them on with just dumps , 3" down to cat and new high flow cat ?

I still my stock exhaust sitting at home and from the looks of them BLOODY hell they are Restrictive.

As for doing the dumps it will make the turbos spool up quicker.

Do the whole exhaust in once hit. Enjoy the full power of 1JZ.

Jeff Wilkins
TryHard
South Australia
JZZ30 GT-TL

Posts: 336
Reg: 07-2005

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

Tuesday, January 09, 2007 - 02:24 pm, by: Jeff Wilkins (Calin)

Marius, that's what peak recall is for (if your boost gauge has it of course).

My winter peak is about 11.5 psi

Hot summer day only manages about 9-10 psi (fluctuates).

The only mod is a BFI

Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8

Posts: 6810
Reg: 11-2004

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

Tuesday, January 09, 2007 - 03:01 pm, by: Peter Nitschke (Pen)

Pre-owned cat.

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