A friend of mine wants to boost 20psi, but obviously gets fuel cut, and CELs at that boost. Is there any way arround the fuel cut?

 

alright i am the friend. just found the mrt fuel cut deffender. will this allow me to boost higher. im boosting to 20 then flying back down to 16. ive got an s-afc also what can be done for more power? stock exhaust and aem intake, s-afc. what will help me get more power? i know exhaust sucks and will be changing that later.

 

You shouldn't use the stock turbo at 20psi, it's dangerous for the turbo itself especially since you have the stock exhuast+upipe it must be seeing high EGTs, high backpressure(from the stock exhuast) it might not last as long as one run within it's efficiency range.

Why do you need to use so much boost anyway as one of your first mods? Plenty of power can be made within 15-16psi which is a much more safe and sain level of pressure for an td04l13g. The air will be VERY HOT at 20psi(making the extra pressure useless for performance in most cases) or anything over 17psi on the stock turbo, which makes it much more likely that you will get detonation, especially if you've leaned out the fuel map using the S-AFC you have. More boost does not always mean more power, your walking down an dangerous path!

My advice is to lower the boost down to 14psi, get an turboback exhuast+upipe, then raise the boost back to 15-16psi and tune your S-AFC. But more importantly, learn more about your car and how to safely tune+mod it.

Paul

 

You're doing nothing but destroying your engine and turbo on that boost. Like the poster above me said, you are seriously risking detonation. Not to mention, the Stock Turbo really doesn't push more than 16-17 lbs of ACTUAL boost before it starts pushing just plain HOT air. If you continue to do this, you better save your money for a new Turbo, and possibly a new engine.

Blue