jpwalt1987
Well-Known Member
I just swapped out a set of 80s for a set of 125 Bosch injectors from TT. I made the changes to the injector pph setting on the parameters page. The car would start but as soon as it would fire off and run for just a few seconds. I saw that it was going extremely lean on the AFR. I verified fuel pressure was at 45 line off. To get the engine to stay running I had to increase the injector offset number from 28 to 49 and then i also had to increase the VE table in the idle area of 50kpa. I went from 47 on that area to 57 just to get it to idle with zero Air fuel correction. I took a drive and the AFC was pegged at +30% almost the whole time. It doesnt seem right to have to raise the VE numbers up so high to make the AFC come in line. This is an SD2 chip that was burnt for E85 and 80s, the only change now being swapping to 125s. Are there parameters hidden in the background of the program that cant be changed by the end user regarding injector behavior? Any advice is appreciated. The car went 11.58@125 at BG last week on E85 and Alky. I went to the 125s to get away from having to use the alky as a make up fuel.
Thanks!!
Thanks!!