Quote:
Originally Posted by DarkSunrise
Did some hot weather (85-95 F) testing today. 30 miles of highway. Then four 2nd gear pulls and a 3rd gear pull. FLKC gradually grows with each successive run, ultimately pulling 2.6 to 3.9 timing from 6800 RPM to redline on the 3rd gear pull. This tune is definitely a little aggressive on my car, probably not ideal for track.
http://datazap.me/u/darksunrise/ofh-...zoom=6206-8714
The rest of the hot weather logs looked ok. FLKC and KC stayed below -0.69, except two instances of KC of -1.41 @ 3300 RPM and -2.81 @ 3800 RPM. IAM stayed solid at 1.00 the whole time.
I'm thinking this tune might be ok to track on with 3-4 degrees less timing from 6700 RPM to redline. Or perhaps more timing compensation but not sure whether to adjust for coolant temps or IATs, as I didn't see a strong correlation in the logs.
@ solidONE - I recorded MAFv on these logs. I think I remember seeing peak values around 4.01v on some runs. Interested to hear how that compares. |
I'd have to dig through my logs to find one that matches your IAT's, but here's a recent one with IAT's at about 75* oil temps @226* MAF voltages peaking @ 4.09
http://datazap.me/u/solidone/z6-kc1-...2184-2193-2204
Here's your 3rd gear pull in that log. MAFv is lower across the entire range, as expected due to the higher IATs. You are running the stock air box, right?:
http://datazap.me/u/darksunrise/ofh-...8473-8486-8499
I personally wouldn't go that conservative with the ignition advance, and I'd be okay with some FLKC and IAT drop under track duty. Regardless, your current tune will be words better than a completely stock calibration in terms of knock resistance. If I were you I'd decrease gradually the ignition advance -0.35~.07 at 6400 rpm, -0.7~1.0 @
6800rpm, -1.0~1.4 @7000+ at and above 1.0 g/rev. Test that out, and go from there to see if it requires more adjustment.
Edit:
@
DarkSunrise
I managed to take a log that is a bit closer to your IAT in your log, though its still a few degrees cooler:
http://datazap.me/u/solidone/z61b-ho...28-136-119-110
Your earlier log marked at the same 500rpm intervals. @3500 your MAF voltage is much higher than mine. Probably making a bit more torque there than my setup:
http://datazap.me/u/darksunrise/ofh-...8461-8449-8437