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Matt Fairless
Newbie
NSW
Soarer JZZ30

Posts: 2
Reg: 08-2009

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Thursday, August 20, 2009 - 09:38 pm, by:  Matt Fairless (Fairlezz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

hey guys
my JZZ30 is stock apart from a Turbosmart manual boost guage and pod filter, and an "Apexi Air Flow Meter" im new to turbos and dont want to screw anything over.
question 1) if i up the boost using the guage the fuel cut will still kick in at 11psi no matter what i set the boost at?
2) wat the hell is the air flow meter??!!
cheers
Rob Rojo
Goo Roo
NSW
Soarer TT & UZZ31

Posts: 2697
Reg: 12-2007

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Thursday, August 20, 2009 - 11:17 pm, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

1. The stock fuel cut is usually between 13.5 and 14.5 psi, so if you wind the controller up to much it will just hit cut unless you have a fuel cut defender installed.
2. Soarer TT's don't run airflow meters just MAP sensors.
Matt Fairless
Newbie
NSW
Soarer JZZ30

Posts: 4
Reg: 08-2009

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Tuesday, August 25, 2009 - 08:33 pm, by:  Matt Fairless (Fairlezz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

True.. so maybe my boost guage is set on 11.. hmm
these fuel cut defenders ive been reading so much about. were do i get my hands on 1, how much, and how hard to install???
Rob Rojo
Goo Roo
NSW
Soarer TT & UZZ31

Posts: 2707
Reg: 12-2007

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Tuesday, August 25, 2009 - 09:01 pm, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

A Boost gauge does not alter the boost level it is just to display the amount of boost running.

In order to alter the amount of boost pressure you need a boost controller. Either a manual bleed valve or electronic controller.

A fuel cut defender will allow you to adjust boost via a boost controller beyond the factory cut off level of approx 14psi. You can buy a DIY FCD kit from Jaycar for around $30 but they do require full assembly (soldering ETC) or you can buy a HKS or Turbosmart kit for around $100-$150 on the net.

Raising the boost beyond 14psi with a stock exhaust will raise performance but will most likely reduce the life of your turbos as the stock system is very restrictive and put more stress on the turbos. Your better off fitting a good aftermarket exhaust system first and raising the boost later.
Matt Fairless
Newbie
NSW
Soarer JZZ30

Posts: 5
Reg: 08-2009

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Tuesday, August 25, 2009 - 09:20 pm, by:  Matt Fairless (Fairlezz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

yea sorry i meant boost controller!!
:S
ok great ill look into those kits!!
yeah wont be uping the boost till the exhaust system is on! just trying to plan ahead before i dive in!!
thanks mate!
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 698
Reg: 12-2006

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Wednesday, August 26, 2009 - 05:51 am, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Whats this Apexi air flow meter you are talking about? Is it an electronic gizmo inside the car? Or something in the engine bay? Do you mean apexi-AFC?

You will know when you hit boost cut, the car will jerk and stutter. Very annoying thing to have happen.
Mark Pattel
Tinkerer
Queensland
jzz30 tt

Posts: 83
Reg: 04-2006

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Wednesday, August 26, 2009 - 01:12 pm, by:  Mark Pattel  (Mark1414) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

If you get a nice free flowing exhaust and intake, you will usually find the 'natural' boost level raises to around 10-13psi. Something to think about.
Matt Fairless
Tinkerer
NSW
Soarer JZZ30

Posts: 6
Reg: 08-2009

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Wednesday, August 26, 2009 - 08:13 pm, by:  Matt Fairless (Fairlezz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

yea its a interior gizmo!!
it just says Apexi air flow meter on it, and it has all these settings and sensor menues, i havnt played with it cos i dont want to screw stuff up!
yea i no were the boost cut is! :S and it kicks in at 11psi.
thanks, it seems exhaust is first on the cards, recomendations? size etc?
Matt Fairless
Tinkerer
NSW
Soarer JZZ30

Posts: 7
Reg: 08-2009

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Wednesday, August 26, 2009 - 08:15 pm, by:  Matt Fairless (Fairlezz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

yes i did mean apexi AFC! haha just had another look.
enlighten me??
Rob Rojo
Goo Roo
NSW
Soarer TT & UZZ31

Posts: 2713
Reg: 12-2007

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Wednesday, August 26, 2009 - 08:20 pm, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I have never heard of a factory boost cut being 11psi, possibly your boost gauge or map sensor may be faulty or possibly the settings in the AFC are wrong.

Apexi AFC allows you to alter the airflow readings to the ECU allowing you to tune air fuel ratios.
read here for more details on the AFC

http://www.alamomotorsports.com/apexi/safc.html

Also all of the questions you have asked have been asked many times before, just use the search function for answers regarding exhaust and other mods.
Matt Fairless
Tinkerer
NSW
Soarer JZZ30

Posts: 8
Reg: 08-2009

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Wednesday, August 26, 2009 - 08:58 pm, by:  Matt Fairless (Fairlezz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Cheers mate!
but if we all used the search button then there would be no new posts and you would have no one to talk to!!
:-)
Rob Rojo
Goo Roo
NSW
Soarer TT & UZZ31

Posts: 2714
Reg: 12-2007

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Wednesday, August 26, 2009 - 09:32 pm, by:  Rob Rojo (Rob_tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I am sure I would get by somehow.
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 699
Reg: 12-2006

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Saturday, August 29, 2009 - 05:21 am, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Matt Fairless wrote on Wednesday, August 26, 2009 - 08:58 pm:

but if we all used the search button then there would be no new posts and you would have no one to talk to!!




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