Originally Posted by Asbjørn
Again, perhaps a stupid question, but are you sure that is not because the turbo boost has increased as the exhaust flow is less restricted?
Or is it somehow controlled by the ECU? And if so, is the explanation that target boost is reached faster due to lower flow resistance?
The turbo boost is controlled by the ECU: with stock map it is aprox. 8 psi and as you say, with decatted DPs, this target is reached faster due to the lower flow resistance. With JB4 map 2 (my case) the boost grown up to 15 psi due to the input signal of the modified ECU and, once again, those psi are reached faster due to the lower flow resistance of the decatted DPs.