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Old 04-30-2016, 07:35 PM   #1177
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Originally Posted by tha_alkaholiks View Post
Thanks solidONE. Regarding the IAT first log was during the day, second was at night. So that might be a factor.

I've also noticed that knock correction seems to happen when I'm on the highway and I downshift to overtake. It doesn't seem to happen if I'm going from a standstill.

I'll do more logging to try and to try figure it out.
Try to capture that in logs too. lets see it. sounds like a bit of tip in knock correction which this car is prone to do.
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Old 04-30-2016, 08:45 PM   #1178
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Originally Posted by steve99 View Post
you can force ecutec to flash a different rom from whats in the ecu. But should only be done if you know its compatable.

something a miss especially in the second log

IAM 0.38 and still pulling 2 or 3 degrees due knock.

http://datazap.me/u/rifle/intercoole...zoom=3628-4043


as you say maybe intercooler still an issue, the maf sensor measures intake air temp as well and its before supercharger , so you probably need something to measure intake charge temp.
Spent all day redoing the cooling/intercooling system. The system is now properly heating/cooling. Here's a new log.. My tuner said it looked like it was still cutting some power, then had me log 'knocking signal'. I don't know exactly what the is, I was hoping someone else knew.

Also, here's the most recent log.

http://datazap.me/u/rifle/redid-cool...m?log=0&data=6
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Old 04-30-2016, 09:49 PM   #1179
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Spent all day redoing the cooling/intercooling system. The system is now properly heating/cooling. Here's a new log.. My tuner said it looked like it was still cutting some power, then had me log 'knocking signal'. I don't know exactly what the is, I was hoping someone else knew.

Also, here's the most recent log.

http://datazap.me/u/rifle/redid-cool...m?log=0&data=6

I would imagine the "knock signal" is a fairly raw/unprocessed input from knock sensor. Their is likely a fair amount of digital processing applied to that signal, looking a frequency duration amplitude ect, as the ecu interprets the signal as knock it should act on or background "noise".


It is possible that loose nuts/bolts, or exhaust hitting on chassis or similar "mechanical" noise can be falsely interpreted as knock by the ecu.


Its possible that this may be your problem, probably worth checking their are no loose bits a pieces hitting or rattling, exhaust , overpipe hitting chassis etc.
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Old 04-30-2016, 09:56 PM   #1180
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I would imagine the "knock signal" is a fairly raw/unprocessed input from knock sensor. Their is likely a fair amount of digital processing applied to that signal, looking a frequency duration amplitude ect, as the ecu interprets the signal as knock it should act on or background "noise".


It is possible that loose nuts/bolts, or exhaust hitting on chassis or similar "mechanical" noise can be falsely interpreted as knock by the ecu.


Its possible that this may be your problem, probably worth checking their are no loose bits a pieces hitting or rattling, exhaust , overpipe hitting chassis etc.
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Old 04-30-2016, 10:20 PM   #1181
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Try to capture that in logs too. lets see it. sounds like a bit of tip in knock correction which this car is prone to do.
Cheers, I'll try and capture that in future logs as well.
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Old 05-01-2016, 02:31 AM   #1182
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I tried to rescale my MAF. This is the log after my first maf scale
http://www.datazap.me/u/dru670/1st-m...=0&data=1-5-13

and this is another log after I did a second scaling of the MAF.
http://www.datazap.me/u/dru670/2nd-m...=0&data=1&hg=1

I was wondering what do you guys think looks better between the first and second Maf scale. I was told it takes a good 3 or more maf scaling to get it right but i'm wondering if it is getting any better or not so far.
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Old 05-01-2016, 02:55 AM   #1183
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@Dru670 just check that the mean/mode graph is close to 0% and that the curve is smooth. The better the scale the grouping should get tighter.
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Old 05-01-2016, 09:52 PM   #1184
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I've been running this calibration since February including a track day and several canyon runs. I've felt no need to make any more changes to it. Could it benefit from more dialing? Possibly, but I doubt I would get too much improvement in terms of power or knock resistance. During the track day the IAM did drop some, but no lower than .85. I think it's acceptable and don't feel I need a "track tune". Although I vaguely recall reading something about a newly discovered table that controls how the computer makes knock corrections. Would appreciate if someone can point me to some info about that. Other than that I find this calibration quite satisfactory.

http://datazap.me/u/solidone/z6-lean...zoom=2186-2486

For shit's and giggles. Power this tune(save for some minor differences in the fuel tables) is putting down relative to the initial tune for the same set up:
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Old 05-03-2016, 02:05 PM   #1185
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finally was able to get some decent 3rd gear pulls this weekend. Tune feels real good after switching to shell. 40HP difference just from fuel! I did notice IATs shot up after the pull. Should i be worried about that?
Pulls:

http://www.datazap.me/u/xero404/jrsc...log=0&data=3-6

http://www.datazap.me/u/xero404/jrsc...ata=6-12-14-15

http://www.datazap.me/u/xero404/jrsc...6?log=0&data=6

Full tooj run log (got a little carried away and logged the whole run on the mountain lol)

http://www.datazap.me/u/xero404/jrsc...un-4-30-16-716

Last edited by xero404; 05-03-2016 at 02:30 PM.
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Old 05-03-2016, 04:03 PM   #1186
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finally was able to get some decent 3rd gear pulls this weekend. Tune feels real good after switching to shell. 40HP difference just from fuel! I did notice IATs shot up after the pull. Should i be worried about that?
Pulls:

http://www.datazap.me/u/xero404/jrsc...log=0&data=3-6

http://www.datazap.me/u/xero404/jrsc...ata=6-12-14-15

http://www.datazap.me/u/xero404/jrsc...6?log=0&data=6

Full tooj run log (got a little carried away and logged the whole run on the mountain lol)

http://www.datazap.me/u/xero404/jrsc...un-4-30-16-716
I see your MAF Voltage is peaking at nearly 5 volts.

How much boost?
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Old 05-03-2016, 06:13 PM   #1187
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I see your MAF Voltage is peaking at nearly 5 volts.

How much boost?
just the standard JRSC 10psi pulley and seeing about 9psi after 7200rpm. Using a 4bar Skunk2 MAP sensor so it should keep up .
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Old 05-03-2016, 06:33 PM   #1188
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just the standard JRSC 10psi pulley and seeing about 9psi after 7200rpm. Using a 4bar Skunk2 MAP sensor so it should keep up .
http://www.datazap.me/u/xero404/jrsc...mark=154-93-23

I see the computer is pulling up to 4* of timing when you crack the throttle wide open from such 1200rpm. I'm sure that's not a huge problem since it's not often you would drive like that under normal conditions. Also at 3500rpm the ignition advance goes from 16* down to 12* advance. Seems kind of strange it's doing that without any knock correction being logged there.

Perhaps it's all normal behavior for a supercharged application. I wouldn't know for sure.
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Old 05-03-2016, 06:58 PM   #1189
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First time trying this, I hope I logged the correct parameters and got enough variance in driving. It was wet out and still traffic on most of the roads, so WOT pulls were basically impossible.

Can anyone tell me if this looks safe/acceptable for e85 tune?

http://www.datazap.me/u/pbthomas/log...=1-2-5-9-12-14
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Old 05-04-2016, 04:08 PM   #1190
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@Dru670 just check that the mean/mode graph is close to 0% and that the curve is smooth. The better the scale the grouping should get tighter.
Would MAF3 be the better of the 3?
MAF3

MAF2

MAF1

Last edited by Dru670; 05-04-2016 at 05:13 PM.
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