I was close to having my TBSS tune finished (just had a rough spot around 60% throttle), and now and all of the sudden it sputters bad once it gets over about 6psi. Wideband shows some lean spikes, but I`m not really even getting any KR (less than 1*). I noticed on one of my sputtering mid-throttle pulls, that the injector B2 peaked around 19 while the B1 injector continued to climb to around 24. But in the same scan I did several boost pulls, and it sputtered on all of them, BUT only on the last pull (frame 7,700) did the pulsewidths differ from each other. It runs great from idle up to about 5psi.
I did try reverting back to tunes that I know did not do this sputtering deal, and that didn't fix it, so it seems like a hard-part problem to me.
Any thoughts?