Mark, this may be one of those special tunes with blm min and max set?
Mark, this may be one of those special tunes with blm min and max set?
Square body stepsides forever!!!
Well he said this log was ACSF so if I have that bin I could analyze the data well.
Where did the Stage 1 and Stage 2 come from? Couple different companies use that name, one is reputable... still neither would be a custom tune for your engine, just a closer guess.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
ACSF was superseded twice to AMUR. I compared the bins and no big changes... looks like emmissions tweaks.
End of your log has some idle time and BLM is 108, which is minimum, so it's taking out fuel and still needs more out. Rest of log BLM and INT are all over the place. No error codes. So this is exactly what I would expect for a stock chip and your built engine.
If you know the Stage 2 is for a 350? I'd run it till you can tune or find someone to tune for the engine. The Stage 2s I have seen have less fuel at idle and WAY more spark. SO watch for and listen for Knock. Some of these chips have been known to remove knock retard....
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
The stage 1 I got off this website. The stage 2 is a JET one I bought awhile back, I can upload them all if anyone wants to analyze them. After a min or so in the log where I set for a min before I took off it had a good idle. If I could change something for now to keep an idle like that I'd be pretty happy cause I got pretty good power with the stage 1 and 2. I can data log the stage 2 later and upload that also if anyone wants to see the difference.
The Stage 1 on the site is a Hypertech, not much change from stock, when you have time compare it. You'd be pissed if you spent money on it.
I'd like to see the Jet Stage 2 as I never saw one, from what I read it would be best choice for you....
BTW neither of those companies are the one I was referring to as not reputable.
Clear BLM learn after you put it in. If I can see the file and a log I can point you in right direction. You still have a long learning curve ahead to get this right. By then you'll be like the rest of us and always tweaking something...
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
The reason you started to idle better at that point was you went Closed Loop and fueling correction started, but it soon bottomed out.
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
Yea i wasnt all that happy when i figured out i paid that much for a stage 2 being not that much better. What company would be reputable? If you dont care ill upload the stage 2 to the bins page also. Yea i like tweaking as im either working on cars or building computers so i figured efi tuning would be a combination of both.
Ill get a log for the stage 2 tomorrow after work and upload it. When you said my BLM and INT is all over the place, you think my stock o2 sensor would be right also? By the way on the highway anything it changes is not noticeable. There was also alot of hills so i can data log on a flat road which ever be easier. I dont know if i meantioned the headers are mid sized and 3" pipe, dual all the way back with dual flows.
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