darkbluez28

I'm wanting to go 3 bar setup on a 2002 0411 PCM I read that u can't set the map calibrstion offset under zero but when I look at some of my tunes I have for my ls1 car and 5.3 truck they both will allow -105 to 105 kpa in the offset. Which means I can type in the correct linear and offset for the zr1 map sensor and use the 3 bar map os using hptuners. Question is even though it allows negative numbers. is it something that just won't change even if I change it. Or will it work just fine and I can use the zr1 sensor. If not what is the calibration for the older style 3 bar.