acceleration enrichment on off at idle

[Aholt91ss]

i think it was a cpi bin

i believe ill start fresh with a new bin 4.3 TBI manual bin

[Aholt91ss]

what adjustments would i make to run 350

[dave w]

what adjustments would i make to run 350

I would start with a fresh 5.7 .bin set to manual.

[EagleMark]

Since GM had $0D 7.4L manual bins superceeded to 7.4L Auto bins, why not? It's what I have been doing with no ill effects, must be in the newer PCM code because it does not work well in old C3 ECMs.

Or you can use the only 5.7L Manual bin file we have? BJYN...

What we need are these 5.7L Manual bins.
BMLF
BYXS
BYXT
BYXR
BYXZ
BMYS
BPSA

[Aholt91ss]

So there is a 5.7 manual bin?

[helo]

Easy to make a 5.7 auto bin a 5.7 manual.. I think it's just one flag to uncheck, maybe 2 =). Definitely start with a common 350 bin.

When I started with my vortec motor, I think I was increasing the AE stuff by something like 200%-300% to get it driveable enough to do any useful tuning; 30% is like pissing into the wind (you can back it off later). In a perfect environment you should maybe disable AE to start, but some of us don't have airport runways at the end of our driveway...

Spark and VE are give and take until you get close, but I'll say that I had more trouble with not enough timing than too much, which totally goes against most of the advice you'll dig up. I had intake backfiring from too little advance regardless of fuel mixture.. my vortecs aren't happy if timing drops below 25* except high MAP low rpm. good luck =)

[Aholt91ss]

An auto bin wouldn't make it idle high?

[Aholt91ss]

In a perfect environment you should maybe disable AE to start, but some of us don't have airport runways at the end of our driveway...

But I have some back roads at my disposal lol

[EagleMark]

Or you can use the only 5.7L Manual bin file we have? BJYN...

Cal Data says this is manual, but manual is not checked and all the trans error codes are on, so I think Cal Data is wrong and it's an Auto.