Now how do I get my Tach in the dash to read the same as the tach in TunerPro? it's about 500 rpm to fast since i switched from v6 to v8.
The signal to tach comes from wire off coil. So now that it is running correctly I would suspect it to be correct... but maybe there is a differnce in the tach?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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