Torque Knock PID - may have some progress...

Very good question Bruce. I don't think I had this PID operational before the 4X. Under acceleration though I seem reliably to get timing added in. I'm not watching at the right time to see the positive reading but I'm theorizing maybe when it's lugging some like low throttle without downshift. At any rate it's not exceeding the amount the car can handle so I imagine it's not a problem....IDK.
 
I see a max of 3-4 on my 4x but only under lugging throttle conditions. It adds timing at light throttle and only see a blip at wot. I got pretty similar results with the 4+ tune as well under moderate loads, although I usually never had any knock under WOT with the 4+. Its a bit more aggressive but still seems fine to me.
 
wasinger3000 said:
Corn will cure the knock. I never see knock anymore.  The most I've recorded was .5.
I'm pretty sure running larger concentrations of ethanol in a pre 2013 that has been tuned is a bad idea...our fuel pump isn't as good as yours! ;) yes...I'm jealous.
 
On my 2011 I can't get a +knock reading with trying to produce it with erratic pedal play at all speeds. Only time I get timing pulled is under a full wot from a dead dig, it jumps from -.5 to +.5 then....if gradually entering wot it adds timing the whole time...
 
ecoboostsho said:
wasinger3000 said:
Corn will cure the knock. I never see knock anymore.  The most I've recorded was .5.
I'm pretty sure running larger concentrations of ethanol in a pre 2013 that has been tuned is a bad idea...our fuel pump isn't as good as yours! ;) yes...I'm jealous.
Oh that's right.... it's like rubbing corn in an open wound. Lol sorry about that. Maybe someday we will all have equal corn rights.
 
wasinger3000 said:
ecoboostsho said:
wasinger3000 said:
Corn will cure the knock. I never see knock anymore.  The most I've recorded was .5.
I'm pretty sure running larger concentrations of ethanol in a pre 2013 that has been tuned is a bad idea...our fuel pump isn't as good as yours! ;) yes...I'm jealous.
Oh that's right.... it's like rubbing corn in an open wound. Lol sorry about that. Maybe someday we will all have equal corn rights.
I've always wondered if we could get away with a mild mix in the summer...just too chicken to try and too lazy to mix it I guess. I will be interested to see if your fuel pressure maintains itself in cold weather with E30. The cold air requires more fuel and that is when people were running out. LMS even had a cold weather tune until it wad all sorted out. That said this car seems pretty good at saving itself!
 
I have a 2010 and have been thinking about a mild cocktail - maybe just 2-3 gallons of E85 along with 93.  The 93 is already 10% ethanol.  Do you think there is too much risk in that?  That should equal around 95 octane...maybe not enough to make a difference....

By the way, my Aeroforce gauge is showing +/- 2 or less.  99% of the time it is at zero. 
 
Most of our data is coming from the 2013+ right now for E85 mixes.  I know Mike ran E85 in his Flex, hopefully he will chime in on running E85 mixes in the 2010-12 EBs.  Also, Bruce, you are running 4X.  Hopefully it won't be thrown off by the extra octane?
 
I have read other threads about running e85 in the 2010 - 2012 models and have decided not to bother with it.  The 93 I run is already 10% ethanol and I have no detonation issues so I will just leave things as they are - unless getting 93 becomes a problem in my area.
 
wasinger3000 said:
FoMoCoSHO said:
Yup. I'm at e34 right now and all is well.
Did I inspire you to go past 30%? Hah
No, I've been there once before but became uncomfortable with the trims. I got over that and want to see what happens. Putting in the stock filter and cranking the corn yielded 22lb-ft higher peak than previously recorded in both Torque and Dash Command. 11 of that was just the change back to a new OEM filter.
 
FoMoCoSHO said:
wasinger3000 said:
FoMoCoSHO said:
Yup. I'm at e34 right now and all is well.
Did I inspire you to go past 30%? Hah
No, I've been there once before but became uncomfortable with the trims. I got over that and want to see what happens. Putting in the stock filter and cranking the corn yielded 22lb-ft higher peak than previously recorded in both Torque and Dash Command. 11 of that was just the change back to a new OEM filter.
You should get it tuned for 30%.
 
wasinger3000 said:
FoMoCoSHO said:
wasinger3000 said:
FoMoCoSHO said:
Yup. I'm at e34 right now and all is well.
Did I inspire you to go past 30%? Hah
No, I've been there once before but became uncomfortable with the trims. I got over that and want to see what happens. Putting in the stock filter and cranking the corn yielded 22lb-ft higher peak than previously recorded in both Torque and Dash Command. 11 of that was just the change back to a new OEM filter.
You should get it tuned for 30%.
Waiting for my cutout to come back then its on like Donkey Kong....
 
FoMoCoSHO said:
wasinger3000 said:
FoMoCoSHO said:
wasinger3000 said:
FoMoCoSHO said:
Yup. I'm at e34 right now and all is well.
Did I inspire you to go past 30%? Hah
No, I've been there once before but became uncomfortable with the trims. I got over that and want to see what happens. Putting in the stock filter and cranking the corn yielded 22lb-ft higher peak than previously recorded in both Torque and Dash Command. 11 of that was just the change back to a new OEM filter.
You should get it tuned for 30%.
Waiting for my cutout to come back then its on like Donkey Kong....
Let me know what your fuel rail pressure looks like.

I think I'm going to increase up to 38% and see if torrie can bump up my timing.
 
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