Originally Posted by Tdanderson
Ok, just so i have this straight. The cobb and PROceed adjust timing based on load. But the JB4 relies on the knock sensor to adjust timing?
That info is all a few years out of date now. After Vishnu made such a big deal about CPS despite the ~15,000 JB3/JB4 cars who have run without it for years BMS decided to just add it for those that want it. So the JB4 G5 has CPS support now, and large turbo customers now use the BMS back end flash which has dramatically revised advance tables.