2009 Cts-v intermittently sticking lean at part throttle
Hi everyone, I've been trying to tune my MAF at part throttle and i can't get it dead nuts because there are intermittent lean spots after throttle transitions and sometimes steady state. It will all of a sudden dip a little rich and then come back in line. I started working on the VVE coefficients with Bluecat and could only go so far because these lean occurrences would skew my data too much to make relevant adjustments. Ltft's and Stft's are turned off and closed loop is disabled with VCM controls.
Mods are:
2.5 upper
Airaid
Stainless Works Catback
Ls9 cam
Id850's
your injector data is correct it seems, but your issue is that your O2 are not switching. have you inspected the the sensors, also since you have an Airaid intake and in seems like your maf transfer is untouched. you need to compensate for the larger diameter