Originally Posted by 240M3SRT
Is the MAP sensor the limiting factor meaning it simply needs to be upgraded with one that can read more boost? Or is it that the ecu cant adjust fuel maps past a certain point, and if so will a tune solve the problem?
My understanding is that it's the ECU
Originally Posted by 240M3SRT
All these dollars we spend on big pullys, headers, etc are pointless past a certain level if the ECU cant handle the necessary calculations.
No - We just need to balance the mods; unless you were going to run flat out at WOT for long periods of time. Pulling hard off the line is my main performance goal - not so much increasing top speed.
With the 185MM pulley my SRT will reach max PSI when I am in the Tiptronic mode - but only momentarily before shifting into the next gear.
When I took the SRT6 out to the desert for a high speed run, I believe I hit around 23-24PSI running flat out at 165-170MPH - (but I was to busy with my eyes on the road and did not think to sneak a glance) but that engine RPM was momentary as well. It might be a concern if I went wide-open for say 10-15 miles but I had my ECU tuned to run just a tad richer. I have never had CEL since installing the 185mm pulley.