2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Will I hit fuel cut?

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Old Oct 30, 2002 | 06:00 PM
  #1  
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Will I hit fuel cut?

I have searched, but did not find an answer.

Will I hit fuel cut if I have a K&N drop in filter, and no cats (3 inch pipe from turbo to stock Y Pipe).

Everything else is stock.

Thanks
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Old Oct 30, 2002 | 06:02 PM
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Yup.

Steve
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Old Oct 30, 2002 | 06:10 PM
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yes.

and if you add an FCD you will blow you engine within 1-2 weeks
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Old Oct 30, 2002 | 06:20 PM
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unless you're running an upgraded fuel pump and FCD than will it last for more than 1 - 2 weeks?
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Old Oct 30, 2002 | 06:41 PM
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Thanks! exactly what I wanted to know.

Will I still hit fuel cut if I have a stock filter and replace the pre cat with a downpipe and keep the main cat?

Thanks
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Old Oct 30, 2002 | 06:47 PM
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From: n
I use this as a rule of thumb.&nbsp Roughly...

K&N air filter panel +1psi
Cone filter +2psi
pre-cat replacement w/downpipe +2psi
main cat replacement w/straight pipe/pre-silencer +2psi
cat-back +2psi
TID replacement +2psi

Stock Zenki boost 5.5psi
Stock Kouki boost 7.5psi

Stock Zenki fuel-cut ~6.5psi
Stock Kouki fuel-cut ~8.5psi
(I believe these fuel-cut numbers are debateable - I don' t have them memorized.)



-Ted
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Old Oct 30, 2002 | 06:50 PM
  #7  
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i think you can get away with your last setup!!
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Old Oct 30, 2002 | 06:57 PM
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depends on the condition of your turbo/wastegate. i didnt hit fuel cut with those mods, but i came really close.
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Old Oct 30, 2002 | 07:04 PM
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OK, so I CANT have the K&N and a downpipe without hitting boost cut?

So I shall geta new stock air filter and a downpipe.

Thanks guys!
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Old Oct 30, 2002 | 08:14 PM
  #10  
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zenki cuts fuel at 8.6psi just like kouki.
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Old Oct 30, 2002 | 08:51 PM
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Originally posted by Scott 89t2
yes.

and if you add an FCD you will blow you engine within 1-2 weeks


Someone told me that once to!
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Old Oct 30, 2002 | 10:06 PM
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my s4 is on approx 6.5lbs and it's never hit fuel cut...

Charlie
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Old Nov 9, 2002 | 06:24 PM
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From: louisiana
Ok....I'm new at all this turbo stuff?? So can anybody answer sum questions for me???


What is a fcd (fuel cut dfenser or defender?) What is the purpose for it? And is it good?? Why do a the fc come wit a fuel cut in the ecu????
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Old Nov 9, 2002 | 06:55 PM
  #14  
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vietboicmb

http://www.teamfc3s.org/info/articles/fcd/diy_fcd.htm
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Old Nov 9, 2002 | 07:10 PM
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is it bad to hit fuel cut, or just annoying if you want more boost? Will it hurt anything?
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