its not the sc, it something else.
t app, you load up GM pid's and then add kr on a gauge.
heres a how to. http://www.grandprixforums.net/threa...ive-KR-monitor
try setting it up with out torque scan, see if kr is listed first, if its not d/l the other add on.
if headers are not in the budget, pulley up to stock. its for your own good. you'll see after you scan it.
wait for the car to be warmed up before you check for kr, knock sensors dont work till the engine temp is like 160 or so.
and 200 for headers shipped is not to bad of a price, a lot of us run speed daddy headers. cheap and work. a tuner can be bought for another 260. that 500 bucks right there would be felt via the butt dyno for sure lol
