Hello everyone, thank you for letting me join. Novice here and I would not call myself a tuner just quite yet.
I started 2 years ago on my stock G8, modding the car slowly and trying to tune one thing at a time. Green as green can be to tuning, long time mechanic. Currently I am running LTH through glasspacks, CAI, DOD deleted with a 217/23X,.619/.607, 114 LSA cam.
Im chasing my tail since I installed the cam and have been using the narrowbands to tune the MAF and SD. I read the sticky on SD Tuning but without a wideband im confused on some things.
The procedure i have been following is to disable DFCO, force MAF by setting dynamic airflow to 40/39, COT is permanently disabled, and pulling 5 degrees from the high octane table. Using the long term trims from bank 1 and 2 average, I then copy and paste the trims from the graph I built in the scanner, to the MAF frequency table. Then I would Fail the MAF by setting frequency to 1/1, setting all three DTCs to first error, and raising dynamic airflow settings to 6000/5999, to do the same for VE.
I also increased the TPS delay for PE, and I have EQ ratio at 12.5:1 AFR in peak torque.
Now the car runs rich and seems to run worse with fuel trims farther out the more I try to adjust VE and MAF.
I am letting the ECU go into closed loop, and i am using the average of bank 1 and 2 long term fuel trims
Would i be correct to force open loop, and use the short term trims?