Originally Posted by Pro Stock John
Also what is the L99 doing when the IAT's go up, is the pcm cutting back the timing in a big way? I noticed that with my Trailblazer SS that the timing would get dialed back a lot after just one pass. I'd have to cool it down 30 minutes or more.
In addition, regarding cooling, I did not notice a big heat soak problem. With HP Tuners, I can turn on the fans, leave the engine running, and in a few minutes, the Engine Coolant Temp will drop (from 212*+) into the 192-196* range (that I can view on the DIC).
The heat soak problem is one thing steering me away from a blower at this time. My friend with the GT500 would put ice on his Whipple for up to an hour between runs, and one run, boom, it's hot again and killing timing.