Quote:
Originally Posted by Don Juan
Well I couldn't wait and I decided to do a few log runs with my jb4.. so these are the results for whom ever wants to know:
Stock : average of 8-9.5 psi (JB4 off and logging on) man the car felt like a cement truck 
Jb4 Map 1 : average of 11.5 to 13.8 max psi
Jb4 Map2 : average of 13.8 to 15.8 psi
Jb4 Map 6 : average of 14.8 to 17.5 psi 
I will try map6 for a few days and see...the turbo lg still there but now it pulls like a wild horse...
so based on the analysis, the mppk will really benefit from extra boost |
Exactly. Increased manifold pressure and running rich (note your AFR at 13.8:1, which is richer than the stoichiometric ratio of 14.7:1). There's some serious risk inherent in pushing 80% more boost through your engine. To each his own.