[Anthony235]

Originally Posted by Pray for Mojo

New log, not sure why it knocked at 3,100 rpm when I just started to floor it.
http://www.bootmod3.net/log?id=5b17577ed10b432af151f802

Originally Posted by Anthony235

No it isn't. You went from 3k-5900k in the first log and this second log. What I can see in the log shows you don't have enough octane. Go to Stage 2 91oct map. Log again in a safe area where you can at least go to redline.

You can cut the useless stuff off by only logging right before you go WOT and then turning it off after WOT. Or just look at the small graph with the time scale bars; the blue line shows pedal % (WOT) which will then tell you where to adjust the time scale bars
http://www.bootmod3.net/log?id=5b09b67dd10b432f2edcca10

Again, it appears you don't have enough octane to be running that map. Do as you wish though.

[Pray for Mojo]

I don't think that's the issue now, I'm running between 95-97 octane. That low rpm knock seems to show up in quite a few people's 93 logs, including the one you said on the last page was much better.

[Anthony235]

Originally Posted by Pray for Mojo

I don't think that's the issue now, I'm running between 95-97 octane. That low rpm knock seems to show up in quite a few people's 93 logs, including the one you said on the last page was much better.

I'm not talking about the low RPM partial throttle knock. I'm talking about your timing issues.

All is well though. Keeping running it like that. I assume that's what you want to hear.

[ceedawg]

Originally Posted by Pray for Mojo

I don't think that's the issue now, I'm running between 95-97 octane. That low rpm knock seems to show up in quite a few people's 93 logs, including the one you said on the last page was much better.

Listen to Anthony wiilya!!! Sheez

[Pray for Mojo]

The issue isn't octane, it's altitude. I'm at 3,500ft, which means the turbo is working at least 15% harder to get the same boost. Looks like it's up against the upper limit of the turbo's efficiency at max RPM.

The answer isn't always octane, that one is relatively easy to correct. You guys at sea level get a bit more runway to work with. I have 15% less air density here, so turbo works a lot harder. Anyone above 3,000ft is probably going to have the same issue regardless of what fuel they use.

The passive aggressive stuff isn't helpful either, most people aren't morons going wot on a knocking engine and ignoring advice.

[Anthony235]

Originally Posted by Pray for Mojo

The issue isn't octane, it's altitude. I'm at 3,500ft, which means the turbo is working at least 15% harder to get the same boost. Looks like it's up against the upper limit of the turbo's efficiency at max RPM.

The answer isn't always octane, that one is relatively easy to correct. You guys at sea level get a bit more runway to work with. I have 15% less air density here, so turbo works a lot harder. Anyone above 3,000ft is probably going to have the same issue regardless of what fuel they use.

The passive aggressive stuff isn't helpful either, most people aren't morons going wot on a knocking engine and ignoring advice.

Sounds like you got it all figured out. I never knew altitude would cause inconsistent and pulling of ignition timing across all cylinders. Though I'm still not sure why you keep focusing on your partial throttle low RPM knock. No one else here is.

[Pray for Mojo]

The timing cleaned up with E20, but I started getting high rpm knock at 5.5k and 6k. PTF seemed to think the turbo was creating a lot of heat at the higher rpm.

[Pray for Mojo]

I also re-gapped the plugs and swapped the coils around. I didn't log it between changes, just ran a couple more after E20 and plugs that showed far less timing pull but worrisome knock. I think the tune is just a bit aggressive for either my fuel supply or this altitude.

The 91 log seems really good, but I'm not 100% convinced the gas here is up to snuff until I run a tank without all the adders.

http://www.bootmod3.net/log?id=5b1f1da5d10b4355bc6a667d

[frenchfry675]

Originally Posted by Pray for Mojo

I also re-gapped the plugs and swapped the coils around. I didn't log it between changes, just ran a couple more after E20 and plugs that showed far less timing pull but worrisome knock. I think the tune is just a bit aggressive for either my fuel supply or this altitude.

The 91 log seems really good, but I'm not 100% convinced the gas here is up to snuff until I run a tank without all the adders.

http://www.bootmod3.net/log?id=5b1f1da5d10b4355bc6a667d

Soooo it could be octane?

[Pray for Mojo]

I didn't cover everything chronologically, sure initially it was probably octane or a combo of octane and the wrong plug gap. But the high rpm knock seemed to be related to the heat coming off the turbo when I ran it after. I still don't see how 94 octane plus 30 point booster would be insufficient for a 93 tune unless other stuff was going on. I only put 2 gallons of e85 to see if it would clean up the timing 100% but it didn't. I'd like to see if anyone has a clean log at high altitude on that tune, from looking around briefly there were folks in Denver and elsewhere with similar timing pull. I don't think fuel quality is limited to the coastal regions. My initial logs on 93 showed the turbo putting out 15.5lbs of boost which would be close to 18lbs with sea level air density.

http://www.bootmod3.net/log?id=5b1b4bd9d10b437faba93b1e

[frenchfry675]

Originally Posted by Pray for Mojo

I didn't cover everything chronologically, sure initially it was probably octane or a combo of octane and the wrong plug gap. But the high rpm knock seemed to be related to the heat coming off the turbo when I ran it after. I still don't see how 94 octane plus 30 point booster would be insufficient for a 93 tune unless other stuff was going on. I only put 2 gallons of e85 to see if it would clean up the timing 100% but it didn't. I'd like to see if anyone has a clean log at high altitude on that tune, from looking around briefly there were folks in Denver and elsewhere with similar timing pull. I don't think fuel quality is limited to the coastal regions. My initial logs on 93 showed the turbo putting out 15.5lbs of boost which would be close to 18lbs with sea level air density.

http://www.bootmod3.net/log?id=5b1b4bd9d10b437faba93b1e

I'm just busting your balls. Technically it's not the fuel but since the air is more dense you need higher octane to make up for that.

[Pray for Mojo]

Minor update, Halim from Bootmod3 adjusted my boost target down to 14.3lbs, according to the wastegate duty cycle I was maxing out the turbo on both Stage 2 tunes. Hoping I can still run the OTS 91 tune, the car felt great on it and the wgdc hit 100% on both the custom and 91 tune at the same 6,200 rpm.