First of all, I want to thank the fellow HP Tuners who offered advice and encouragement in my attempt to tune my 03 Z06.
After installing my VaraRam cold air intake, my LTFT were in the +14 to18 range; and my FTC read positive input at WOT. I initially raised the VE table 8%, and then an additional 5%, but couldn't drop my LTFT very much, with just the VE table.
So, I returned the VE table to OEM, and reduced the IFR by 5 %, which immediately dropped my LTFT to about +7 to 9. I didn't want to cut my injector flow any more, so I increased my MAF table by 10%. The MAF table increase and the IFR reduction got my LTFT just a bit negative, which is great. I am stopping here, since my cable interface is being EIO upgraded; and I have a set of long tube headers that I want to install. Then, we will play some more.
Now, the questions. I didn't want to reduce the IFR more than 5%, because I was afraid of running out of fuel capacity. Could that happen? Will 5% less fuel jeopardize the ability to maintain PE needs with my headers? What is the maximum that I could reduce the IFR? What is the maximum that I could increase the MAF? Any disadvantages to what I have done?
I was richening up my AFT above 6,000 rpm. I believe my COT was dumping fuel. Can I just shut off enable COT??? Will this burn up my cats? Turn on engine codes?
When I get my LGM headers installed, and cable back, I intend to get into the tuning. With only the VaraRam and HP Tuners, I have gotten my RWHP from originally 348, to 370; and I know that it had more if I could have fixed my AFR curve, as I believe I can do now.
Paul