This is a discussion on Initial Changes for startup and run in within the TBI Tuning (87-95 / OBD I) ECM/PCM forums, part of the Performance category; Hi all, I am getting ready to fire my 5.7 TBI that I built for the first time. I have ...
I am getting ready to fire my 5.7 TBI that I built for the first time. I have tuned an LT1 and a TPI before, but this is my first venture into TBI.
The build is a mild 5.7 with 9.5 to 1 comp, ported swirlie heads, a summit 204/214 flat tappet cam, the ultimate TBI mods and LT1 exhaust manifolds with 3" single all the way back.
I installed an 18 PSI spring in the regulator and am deleting the EGR. I am using an ASDU bin and $42 to tune it.
Can someone guide me as to what sort of initial changes I should make to this factory BIN file in order to get close so I am not either drowning it out or starving it for fuel during my first fire up and run in? I hate to hurt it because the tune was way off before I even get a chance to start tuning it!
Last edited by Fastmax32168; 08-11-2012 at 05:17 AM.