FCD question
Thread Starter
I am segfault
Joined: Apr 2004
Posts: 252
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From: St. Louis
FCD question
I have a Fuel Cut defender, i do not know for sure if it is for a s5 or an s4. There are no markings on it. My motor is an s4.
What would happen if i put a s5 fcd on a s4?
What would happen if i put a s5 fcd on a s4?
Senior Member
Joined: Nov 2005
Posts: 541
Likes: 0
From: united states
i think you should be fine. i believe both fuel cuts are at above 9psi. do you know what the FCD tricks the ecu into thinking. If it holds the boost under 8.5psi you will be alright on the s4 but if on a s5 the fuel cut off is higher you may have to worry
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