Quote:
Originally Posted by Joshinator99
Factory tune richens the mixture during COT to get the exhaust temps down, which in turn protects the cats. That’s all.  |
10-4, thought they could've possibly hidden the exhaust valve cooling effect as it makes sense I guess if the exhaust is getting hot, the valve itself is probably getting hot as well. Megahurtz comments got me thinking, so maybe I'm just trying to give gm engineers more credit than is due haha