Let me start with saying I'm pretty new to tuning, and started learning on a 5.3 swap I'm doing in a 2000 S10 Blazer. It's running/idling fine, but I just recently got it driveable and am trying to work out the kinks, so there could be glaring issues in my scan log/or tune that I'm just not experienced enough to notice.
5.3 with a with small compression bump(4.8 flat top pistons) summit 8719 cam -209 int./217 exh. with an LS6 intake. Seems to pull OK but take off seems weak. I'm getting a lot of knock retard when going WOT. I cannot hear anything bad from the motor during runs. It sounds great. Does this seem like a fuel issue? Just 87 octane in it right now, but I'm worried I have something else going on?
Any and all help very much appreciated.