Originally Posted by firebuick
what are we looking for when you say to check MAP MAF and IPW can i check these whit my aeroforce i know i have maf sensor and map frequency but dont know what is the normal reading .i do know about KR and IAT thank you
With MAF and IAT, we can calculate VE (volumetric efficiency) at 100% TP at any given MAP and rpm (this is really for my own curiosity more than anything, frankly).
LTFT'* and STFT'* will tell us whether the PCM is even able
to adjust fuel trims enough for that mod (likely it is, but certainly worth checking)...that will be dependent on how far off the programmed VE table is from reality; if fuel trims are maxing out at a large negative number, that'* not good.
IPW (injector pulse width) will tell if the injectors can handle the added fuel flow.
2004 Buick Lesabre Limited, Gran Touring; Bone Stock
1998 Buick Lesabre Limited, Gran Touring; Mods: Poly sway bushings/endlinks, Tru-Cool trans cooler, Thrasher shift kit (med), PLIM, front PEM; Mods in progress: Alot of stuff, but slowly...