Alright I'm new here so don't hound me to hard 😂 I got my GTO tuned at a local performance shop and it doesn't seem to run right, it backfires a lot and it has close to no power on the low end (have to get 3500+rpm to see the power everything else is gutless), I normally have to rev to 1500rpm and let the clutch out very slowly or else itll bog down and not go anywhere and sometimes it takes a couple cranks to start and I can tell it runs rich. I will be ordering a wideband soon so I can get the afr and see what that says. The car is tuned on E85. Ill attach the build list along with my tune file and a data log.
The engine is a ls1 bored .030 over (Yes I know, no good...) Its got a texas speed MS4 cam, 80lb injectors, patriot stage 3 heads, I still have the stock intake manifold.
Thanks in advance! I just want this thing to run right, got some races coming up that I wanna compete in but I'm not taking the car as it sits now. I already blew up my ls2, that's what this is replacing until I can build another engine for it.