| | | quote | Originally posted by Darth Fiero:
Tell me about it. GM used different MAF calibrations in many different applications that use the exact same part number MAF sensor. I never understood it myself. The only thing I can think of is final MAF tweaking was done by the factory for each specific application to dial in the fuel and that's where they left it. So, as you can imagine, it isn't going to be a simple matter of just cutting and pasting a MAF calibration table from another tune into yours. You are going to have to dial it in yourself.
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I believe that the different calibrations of the same MAF sensor may have to do with the way the intake air tubes and TB's were sized and configured. The length and bends all can influence the way the air flows.
Must 100% agree that you just can't cut and paste a MAF table for a specific sensor and expect it to be plug and play. But you can monitor the MAP, LTFT's and O2 sensor readings as related to RPM and tweak the MAF curve with small changes here and there. According to the tune that I did, I found small changes can make a big difference.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
