Just did more logging today comaring now summer blend 93 here in central VA to an E22 blend with summer 93. I didn't grab a sample of the "flex fuel" from the Sheetz I use but in the past, it always checks out above 80% E. So my blend with 2.5 gallons E85 to 12 gallons 93 E10 is ~E22. Hot here today, 90 F. I had a tank of 93 with ~2.5 gal of room so this was simple...log the 93, hit Sheetz and cover with 2.5 gallons then drive for about 10 minutes to blend/get it "in there" then do the E-blend log.
Here's the 93 log. Not bad, some KR on all 4 cylinders but max of -2.25 during pull in third gear. IATs were ~16 F above ambient during pull so ~105 F which is a function of the v. large bar/plate aftermarket intercooler I run. Timing advance peaked in third gear at redline at 12 - so down over 2 degrees from cooler temps. Boost peak/taper for third gear is the same as usual...21.5 psi down to ~19 at redline. So a bit down on power here.
https://datazap.me/u/karstgeo72/simos-tools-log-06202024?log=0&data=5-11-19-22-23-24-25-65
Here's the E22 log. KR down to just -1.5 on cylinder 1 briefly during second gear than nothing for third so a significant reduction. IATs were same ~15 F above ambient during pull so ~105 F. Timing advance peaked in third gear at redline at 13 - so up over a degree from the 93 but down 1.5 or so over cooler temps where I've seen 14+. Boost peak/taper for third gear is the same as usual...21.5 psi down to ~18.5 at redline.
https://datazap.me/u/karstgeo72/sim...=0&data=5-11-19-22-23-24-25-60&zoom=3790-4752
Overall, on a winter blend 93 (so Oct - April as far as I can tell) running no E, I can actually limp mode my car due to KR if I don't back off from the factory protections left in place by the aftermarket ECU tune. So sustained KR greater than -4 typically under full-throttle on winter blend 93...it's a HUGE difference. Here is a video of that on the track...can actually do a off/on cycle without stopping. I came in after this and splashed in some 100 to sort it out b/c I was out of E85. This is early in my track/HPDE career so no comments about the driving hahaha I'm quite a bit better these days...
And if anyone is interested, this is what it looks like in colder temps with e-blend and zero KR/max ignition advance (i.e. power):
https://datazap.me/u/karstgeo72/sim...log=0&data=5-11-19-22-23-24-25&zoom=1414-2048
Here's the 93 log. Not bad, some KR on all 4 cylinders but max of -2.25 during pull in third gear. IATs were ~16 F above ambient during pull so ~105 F which is a function of the v. large bar/plate aftermarket intercooler I run. Timing advance peaked in third gear at redline at 12 - so down over 2 degrees from cooler temps. Boost peak/taper for third gear is the same as usual...21.5 psi down to ~19 at redline. So a bit down on power here.
https://datazap.me/u/karstgeo72/simos-tools-log-06202024?log=0&data=5-11-19-22-23-24-25-65
Here's the E22 log. KR down to just -1.5 on cylinder 1 briefly during second gear than nothing for third so a significant reduction. IATs were same ~15 F above ambient during pull so ~105 F. Timing advance peaked in third gear at redline at 13 - so up over a degree from the 93 but down 1.5 or so over cooler temps where I've seen 14+. Boost peak/taper for third gear is the same as usual...21.5 psi down to ~18.5 at redline.
https://datazap.me/u/karstgeo72/sim...=0&data=5-11-19-22-23-24-25-60&zoom=3790-4752
Overall, on a winter blend 93 (so Oct - April as far as I can tell) running no E, I can actually limp mode my car due to KR if I don't back off from the factory protections left in place by the aftermarket ECU tune. So sustained KR greater than -4 typically under full-throttle on winter blend 93...it's a HUGE difference. Here is a video of that on the track...can actually do a off/on cycle without stopping. I came in after this and splashed in some 100 to sort it out b/c I was out of E85. This is early in my track/HPDE career so no comments about the driving hahaha I'm quite a bit better these days...
And if anyone is interested, this is what it looks like in colder temps with e-blend and zero KR/max ignition advance (i.e. power):
https://datazap.me/u/karstgeo72/sim...log=0&data=5-11-19-22-23-24-25&zoom=1414-2048
