Lean sputtering at 1500rpm and 2000rpm.

[1slw3sgte]

Fix an issue and on to a new one . Car goes lean at 1.5k and 2k rpm, exactly those rpm’s. Pulls good in boost no spark blowout. Any ideas?

 

[AWD-Tony]

Post a log

 

[1slw3sgte]

It’s been a while but figured out the problem a couple months ago with the stutter and random misfire at certain points in the rpm rev range. It was a fueling issue and had the fpr set too high at 60 psi pressure and my injectors settings were calculated for 42 psi. Put the fpr at 42 and re calculated the injectors and the problem went away. Fixed my afr and timing tables a bit and connected my aem wideband to the ecu, on narrowband simulation and the car drive like a dream. Datalog graph never looked so smooth. Thanks again for all you guys and your inputs on the issue