Hey Everyone,
Trying to help a buddy get a decent tune in his stock turbo LS2 Corvette, but nothing seems to be working right with fueling.
There was a "base tune" put in it before it came to me due to the injectors that were installed, but something seems off and I just would like a second pair of eyes to make sure I'm not going crazy.
The fueling is acting very strange, I've added close to 50% () fuel in order for it to almost idle at 14.7 (it's around 15.0ish). Prior it was dead lean and wouldn't run at all.
I've not touched WOT as I can't even get lower RPM / idle to act right.
I believe the injectors are too large for the tune limitations (they're using the double stoich, half the injector flow rate, and half the IVT terms method) and I was told only the VE table (running OL Speed Density) needed to be adjusted, but that the injector data is correct.
Again something just seems off, and before I continue chasing this weird behavior, I wanted to run it by the pros.
Info:
- LS2 6.0 2007 Corvette (The ECU came out of a 2007 Chevy Silverado)
- 2-bar map (scaled to read 100kpa at key on)
- 80mm turbo
- FIC 1000cc/95lb Injectors
I've attached the current tune file and a short idle. Any blip of the throttle goes lean and dies so I haven't even messed with it further.
Tune: https://www.dropbox.com/s/4fdz9j443r...0Idle.hpt?dl=0
Log: https://www.dropbox.com/s/rtu0o3sdtc97sc6/idle.hpl?dl=0
I had to upload to dropbox as the attachment button kept timing out. I'll try to upload directly later tonight.
Thanks for any help.