EFIDynoTuning Forum

Thanks.

So if I put the load values of what it is just before the maf tops out into the FN1036A-B upper right cells, do what I need?

I think FN1036A and B is for engines with intake runner control which is turned off on mine. I believe that would correct my concern but I think that table isn't looked at on my tune. However, the FN1037 is a load subtract related to TPS/RPM. Setting all the upper cells to zero might do something. I can't find a Peak Load at sea level on mine.

Thanks for the info. I don't see an inferred load table in my program so a bigger maf sensor is likely the best fix.

I have a long term project, 96 4.6L using QH on CDAN4 PCM. I recently installed a Vortech charger (draw through maf) and to prep for it, I installed 39lb injectors and a 80mm lighting MAF. On motor, I dialed it in pretty good however, with the charger, the maf voltage hits 5 v before the shift point. I have the top table (FN0361) voltage at 5.120 which if I write a higher number, it goes back to 5.120. Also the MAF_HI_ER is set at 4.900 volts. I know I should change to a larger maf but, I would like a workaround if possible. Can the MAF_HI_ER be changed to 5 volts or even 6 volts? The maf sensor can easily read above 5 volts but can the PCM read and act upon a higher voltage. The engine still runs fine but starts to cut back on the injector PW during this over voltage which is a second or two before the upshift. I'm willing to experiment but I hope you guys might know a fix, thanks.....Ken.