Second thought for your running rich problem: They make adapters to install the short injectors into the 3400 fuel rail. I have a full set and the wiring adapters. Not doing me any good. I'll give...

Hi Robin, Chatted with you under a different user name on V6F-Body forum. I can feel the frustration you are having. Quite the struggle you have been going through.

One thing I did early on was to...

New user. Been reading quite a bit and trying to learn some new stuff.
Tuning projects:
'88 S10 Blazer 2wd with '95 LT1 M6. lots of fun. Mostly stock motor.
'92 S10 P/U 2wd 5sp with '95 3.4/3400...