D01ss

iTrader: (24)

I recently installed a polluter cam in my ls1 and got a mail order tune by pcm for less but im still throwing the p0121 code and its running like absolute crap when the ses light comes on, and it also makes my asr light turn on and off randomly. Iv checked everything and even changed the sensor and everything just band aids the problem for a couple of starts. Iv read that adjusting the map to min 0 and max 100 can fix the problem. I don't know much about tuning but is this safe or is this just another temporary fix and if adjusting the map tables to 0 and 100 is it still gonna perform as well as it should or does it have to be more exact than that.

2xLS1

iTrader: (25)

That doesn't effect how the MAP works or how it's output is interpreted, just the parameters for the diagnostic. Setting them to 0 and 100 turns off the diagnostic.

69LT1Bird

iTrader: (1)

yes, that might help

D01ss

iTrader: (24)

what are the chances it could be the a/c high pressure switch? iv read of a few instances were thats the problem but the code and asr just come on at start up with out the a/c ever being turned on.

69LT1Bird

iTrader: (1)

Go here and follow the diagnostics.

P0121