Welcome, looks like a fun toy.
Welcome, looks like a fun toy.
IMG_9038.jpg Its an absolute blast so I'm sure it's only gonna get better after she's properly tuned! Thanks ��
I would think starting with a Corvette or Camaro tune would be a starting point. ECM and BIN or Broadcast code would help.
Thanks. So I've got a 16188051 ECM from a 1995 Caprice with a 4.3 ( the vin stored matches a 95 b-body with a 4.3).The bin is 16209421. Which seem weird because on Eehack that bin is listed for a 94 F-body. I've reset the flags, cyl. volume for the 5.7, cooling fans, and Speedo. I was originally going to start with a F-body bin. I liked the idea of a perf. Shift button but wasn't sure what issues I would run into. I'm running a modified b-body harness. With 2 1995 caprice know sensor and a 95 4l60e. Any guidance would be greatly appreciated��
Most of my learning has been on OBDII stuff. There are several people here that have extensive experience with the OBDI platforms.
At idle, when it tries to die, what do your oxygen sensors tell you. Are they going lean, or rich? Lean will point you towards a probable vacuum leak, rich could be extra fuel coming from the EVAP system, or a fuel injector/regulator issue. Would deal with your known issues first before trying to massage a couple extra ponies out of your engine.
Good luck
Definitely makes sense. My initial thoughts bring me to the fact that I didn't have this issue when I had the 4.3 baby lt1 in the car. It ran well. I had rebuilt a5.7 Lt1 and threw that in same sensor, intake, throttle body. Drove pretty good except in CL at idle the RPM's were hunting and it will eventually stall. I had a big car show coming up so I left it alone( it was in the 2023 Hotwheels Legends Tour chosen as 1 of 10 Global Semi Finalist). So I left it alone. It was running with the 4.3 bin. So I assumed that could have been the issue or I also read about the long tubes causing o2 issues(which I have not adjusted for yet). Although I adjusted cyl. Volume for the 5.7. Theirs probably more involved. I think my next move will be trying to use a closer bin from a 5.7 and adjusting for long tubes. Then proceed with some diag if it's still present. Would you have any knowledge of weather a F-body bin would be a problem with my current knock sensor setup or anything else? Thanks for your help.
Lots of good LT1 information available on $EEHack: https://ecmhack.com/eehack-2/
The site owner of $EEHack is gearhead-efi member (Steveo)
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