What a hell of a read!!!
Big thanks to all in this thread that explained in detail about EOIT, thanks for contributing to our tuning community.
This reminds me of what Greg Banish told me in one of his tuning classes back in 2007 or 2008. He called it transport delay. He mentioned that Ford had it and GM had something similar but never went on to explain it in more detail.
So basically what I got out of this thread for GEN 3 LS1 PCMs:
- By adjusting (increasing) EOIT "Normal" , you can reduce or eliminate most exhaust smell at idle when not running cats on a cammed LS1
- LS1 PCMs are limited on what you can control, not 1 value solves all
- .11 = 10 degrees of crank rotation
- Leave the "Injection Timing Boundary" at 6.50 (stock value)
- Leave the "Makeup Injection vs ECT" at (stock values)
-
Don't oversize your injectors for your application
- The bigger the cam and more overlap the higher the "Normal Injecting Timing vs ECT" values
- EOIT normal values can range from 6.0 all the way up to 6.5, depending on valve events
I know people are looking at this information (this whole thread) and asking themselves, what value should I put in there for my combo. There is not one answer, every car will have a different value. Unlike the GEN 4 E38, E67, E40 ECMs that have way more control over EOIT, the best all of us GEN 3 LS1 guys can do is "get it in the ballpark" approach EOIT since all we can change is over ECT.
If any of my summary is wrong or misleading, let me know so I can correct it so people that research this in the future has something to start with.
Bill