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Hi,

I was wondering what happens technically if a RS4 gets heatsoaked (chipped car).
It's hot, you're standing still for a while and the intake temp gets higher.
My mapping is asking for 20-21 psi, but in this case I see 24-25 psi (no peak, but holding). This is what I noticed when running hot. Accelleration seems to be fine though, no holding back, but it bothers me because with so much boost the ecu would need to <beep> timing a lot!

On launch: Will only the ignition timing <beep> and/or will the ECU try to compensate by giving more boost in order trying to deliver the requested load?

I'm trying to find answers here..

p.s. Did a leak test yesterday, and found no boost leaks.

id say it was down to the n75 valve, try changing it and see what happens.

hmm.. could be indeed. I'll give that a shot, thanks!

david t had this kind of problem when tracking. new n75 cured it

I replaced the N75 the same day, then went driving. First few km's the problem persisted, but I know the ECU needs to adapt to any hardware changes, so I didn't panic yet .

After a few WOT everything was back to normal. Went driving again yesterday and today, and 20-21 psi it is! You can hear by the sound of the exhaust that it likes it much better!

Thanks Jimbo!!