Quote:
Originally Posted by Socal_Aviator
Have you had any idle issues running the Dinan Stage 2 flash combined with your downpipes?
There is a lengthy thread on this site about people with downpipes and stalling/idle problems. I am considering a Dinan stage 2 with cat back exhaust and downpipes but that thread made me very worrisome.
I love downpipes on turbo cars but the fact that most piggy back systems and Dinan do not incoporate software to compensate for downpipes worries me. Adding downpipes to a turbo car changes the flow characteristics and air fuel ratios quite a bit which combined with a software "flash" that doesnt take this into effect can lead to lean mixture right?
On my Nissan GTR, adding downpipes made a HUGE change to air flow and this required large changes to injector flow to compensate for a safe air fuel ratio otherwise the car will run extremely lean. Downpipes= tune mandatory. I know these are two totally different cars but how do you compensate for the downpipes?
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JB4's auto-tuning map handles downpipes just fine. It is not an ordinary piggy-back.