Originally Posted by Rick@Synergy

We were doing the tuning.

Most people would opt to blame the tuning to be the first culpret, but its hard to say that when even running lower timing and more fuel or vise versa, the truck kept cutting out. So that must rule out the tuning right there. We had to wait a good 10-20 minutes in between runs to keep the IATs down which is crazy to me. I am using tr-6 plugs on the truck right now at .035 gap which is fine for most supercharged apps. You have to look at the fact that a charge is very unstable at that temp.

The thing that is most important to look at is the fact that I am 60 HP improvment from the last time we were on the dyno and with a larger pulley making less boost. So this is what leads me to believe that maybe the cats or the stock y-pipe are restrictive. Plus the fact that the truck would make more power when I took the O2 out of the pipe helps too. A heat soaked engine will only make what it can. I am not about to blow up anyones motor, so if someone else would like tune away on this truck, feel free.

Rick