po121 after ported throttle body and manifold

[06MonteSS]

yeah, cuz as I mentioned over on your ls1tech post, that minMAP and maxMAP parameters are not available in the tune file/template, so since they're not there, can't adjust anything for 'em... so all that could be done was to disable the trouble code...

[supercatxr7]

I want min/max MAP support! I want min/max MAP support! I want min/max MAP support! I want min/max MAP support! I want min/max MAP support! Just kidding....

Oh, and TCM support would be nice too!

[rletzgus]

Ok Help me too. I put a 80MM throttle body on my GMC 4.8. Throttle response is phenominal. But I always get the PO121 code also. I put the stock back on and the PO121 never shows. TPS is good by way of multimeter check. I tried the "relearn" but that made no diff. I increase the TPS v. MPH setting, that made is shift better and the code show less. I got the settings maxed at 40%. If i go higher the thing will go 35-40 in 2nd at part throttle. ?????