Background: Mostly stock LS1 with FAST LSXR 102, 102mm TB and 100mm MAF
I'm currently doing all this testing in SD mode with MAF disabled. In case it matters.
In gear while cruising, it'll actually accelerate (slowly) with no throttle. Out of gear it'll surge to 3000+ rpm. With clutch depressed it'll come back down to normal idle levels. I have not been able to identify any vacuum leaks.
Due to the new TB, I performed the TPS relearn process (once). I cannot get TPS voltage below 0.71V. I keep reading this should be closer to 0.50V, but I cannot get it that low. IAC count is 0 at idle. Idle is reasonable at 850-900 rpm.
An interesting thing I noticed today...
With the A/C off, it experiences the above surge.
With the A/C on, it does NOT experience the surge.
Does this difference in behavior with the A/C running point to anything?
I wasn't expecting this A/C curve ball, so I wasn't logging anything related to A/C. I'm going to add it to my channels for next test drives. If there's anything else I should add for logging which might help, let me know.
Thanks,
Scott