When to start pulling timing at what IAT?

[gearhead08]

This is about GT500s. I assume 03/04 cobras are similar but if you have any information regarding to GT500s this is what I am catering my question to...So I have heard of people raising their overall timing like I have to 22 degrees at WOT with E85, but when does everyone start pulling timing? What IAT does your car get to before it happens and how aggressive does it pull it? I would assume its higher than gasoline, but how much higher? All inputs would be greatly appreciated and will more than likely benefit in the overall tuning of my car here shortly.

Thank You,

Mark

 

[69b302]

I do not start pulling any timing till 160 IAT, on my E85 tune. I pull 20 degrees at 160, and then 50 degrees at 200. I mostly 1/4 mile the car, with plenty of cool down, and have had no issues with these settings for a few seasons(run 23.5 advance WOT). I have upgraded heat exchanger and 13/14 pump on my car, so many times it will not pull any timing on a run. Car is 07 GT500.