we have tunercat and their datalogging program for my buddies car, how acurate is the logger. we had 30# injectors in it and it read the duty cycle at 110%. We just installed 42# injectors and it is reading at 108%. We talked to the guys at fuel injector connection on selecting an injector before going with the 42#er's. does anyone have any experience with this logging program?

 

Hows your fuel pump? ever taped a gauge to the windshield and made a pull while watching the pressure?

 

we have a fuel pressure gauge on it. it stays at a constant 45 #s.

 

What's your wot afr? If it's too rich it could cause high duty cycles.