Join Date: Oct 2012
Location: Elmsley, Ontario
Finally dug into the tune a bit on the car. I started with the PE table.... gawd it was a mess, not at all a smooth curve like the 07 one GMRedline posted a pic of. I also have some personal opinions on the COT tables. With N/A cars that don't have nearly the enrichment we have...the COT table is much more important. The driving style is also influential to this as well I believe. GM had to ensure that if Joe Shmoe decided to bury his foot for 5 minutes on a long highway pull the cat wasn't going to melt down.... but I don't drive like that. Maybe a squirt or two up to 100-110mph is good for me. That being said, with PE set and the COT adder lowered slightly, I moved the limiter for now to 6700 to log some more. A few tweaks to PE delay and other PE enable settings were in order. When logging, the commanded AFR (and delivered) are 10.8AFR at the top instead of 10.4 as it was stock. At 6700rpm and 191-192kpa MAP I saw 106% duty cycle on the stock injectors. Debating if its worth taking the commanded to 11.0 (including PE and COT adder) to see if we can get to 67-6800rpm at 100% Duty cycle. I know ideally we want to avoid hitting 100%, and I will be installing my injectors in the spring, but I just wanted to see what can be done on the stock car without any bolt-on mods. Call me crazy. Thoughts?
Last edited by Papa C 2000; 11-11-2012 at 06:31 PM.