First tune after new injectors using book settings.hpt
VCMSuiteInfo.txt
More MAF increases.hpl
After speedo and new injectors.hpl
I’m trying to tune my first engine build using Dan Maslics “Master EFI Tuner” book with HP Tuners (basic). I’m using Case Study 3 and can‘t get past the first step. I’ve set my ECM up by his criteria and am not having any luck tuning the Idle MAF AFR calibration. My target AFR is 12.5 and my actual reading is 14.5. I keep adjusting my “MAF Airflow vs. Output Frequency” (from 3,000hz and lower) to richen the mixture to equal 12.5. Each time I do, the STFT (reads -45 after 2 ) keep pulling more and more fuel out but my wideband always reads an AFR of 14.5. Does any know why this is?