Ok so finally got everything squared away mechanically, and now I'm having an issue with a high rpm breakup..... I don't know the RPMS as I don't have a tach, but it's close to redline.
Running a 2.5 auto SBEC with bunch of fun mods (big turbo, intercooler, injectoors, etc...) I've swapped my ignition system with Known good components off my van, but I'm having the same issue all the time, with no changes, so I'm thinking it's in the tune.
Here are my two issues that may be related.
1) when trying to break torque I can't build any boost and the rpms don't even climb. I might show 1 or 2psi on the boost gauge and the car is stumbling a little.
2) when making a full throttle pull, where the trans downshifts to first, at the top end of the rpm it breaks up, almost sounds like a real fast staging limter. Air fuel is around 10.8 to 11.0 right before, then goes all over because of the rapid misses. If I put the trans in first gear and just use light throttle it will get up high in the rpms and then have the same miss, just not as violant, guessing because the car isn't under boost.
Now if I'm rolling into the throttle and the trans doesn't shift to first it will build boost and pull strong. I doubt I'm getting the rpms as high as when the engine is in first gear, as I let out of the gas around 80mph, 40 mph over the limit is fast enough for me
Any ideas?