I seem to have an issue when I downshift, say I am going 60mph in 5th and I downshift into 4th, when the boost comes in at about 4500-5000 RPMs the engine sputters or sounds like its misfiring, no power, just sits at that rpm until I let off a little and then ease into it it goes. The A/F gauge shows 10.0 at WOT but when it starts to sputter it is going to around
11.5-12.2? Any ideas? My set up is this 98LS, T3 turbo, walb 255, rc550, AEM EMS, AEM wideband, B&M FPR, Stock PCV, 10PSI, Intercooled, Tuned, MSD SS blaster/MSD cap.
Thanks in advance