Here is the one I use to start with.
dave w
EagleMark EDIT: Bins added to Information Threads and removed here.
Here is the one I use to start with.
dave w
EagleMark EDIT: Bins added to Information Threads and removed here.
Sometimes you start with a cal that's been superseded because that's all you can get. Many OEM tuning issues weren't a huge deal. The bulletins tell you why the updated cal was released and sometimes you can find a similar cal (say for an auto trans) which had the correction to bring over to your tune.
454 plus manual trans wasn't super common with 7747. Most that I remember came with 8747 which was "heavy duty emissions" ecm. Lessee... I'll dig around a bit here... Ok, I've still got a few 454 + manual cals. I have used ANTZ as a base for several cals including a built 258 CJ with Howell fuel only conversion that would smoke a set of 32's from idle.
These days I don't try to upgrade 747 cals, I try to replace the ecm with a P4.
Edit: The auto trans cal previously uploaded is based on AFTB5470. It is not original. A file comparison shows 185 differences with the stock file. I have attached the stock file.
EagleMark EDIT: Bins added to Information Threads and removed here.
Last edited by 1project2many; 11-15-2011 at 08:47 AM.
All good info there 1project2many!
Just trying to weed out bad chip files we host, there's usually plenty of known good ones to start with. I got a good start on it in the info threads and cleaned up my own files on the computer. But now you bring up a point if they are stock? I know some of mine are because I read the chip. How do you know if they are untouched?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
The program I uploaded, Bithoist, can do that for quite a few. For others you need to have a known file to compare to.
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