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Ted's Dyno Plots, Dynojet Dyno, Denver, CO. e85 content
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Ted's Dyno Plots, Dynojet Dyno, Denver, CO. e85 content
<center><img src="http://pictureposter.audiworld.com/77080/giacfxk04corr.jpg"></center><p>Ted's 2004 A4 1.8t, k04, GIAC:
pulls done on an unaltered GIAC FX K04 Race file. No lemmi or otherwise.
93 deg. F temps at the time of the pulls.
100 oct. blend of e85 and 91 oct. pump gas
a few notes...i logged data and will share bits of it with people who want it...but
-requested Lambda is spot-on requested for fueling
-timing correction nearly 0 0 0 0 through the rev band. cyl 3 pulled 2-3 deg timing mid-range. im thinking that may be a CP ready to go out...no other pull across the board.
-EGT at 840 and below
-knock in the low 20s across 1,3, and 4. higher in 2, which is of course the loudest cyl.
im sharing this info fo the people who think my car will lean out, or that it will blow up, or otherwise. to be honest...you are lucky to see logs this good on a stock car. the ECU is as happy as can be....and in that light here are the results...
red line and blue line are the newest pulls, the green line was my best FX K04 pump gas pull on 93 oct, 75 deg. F.
pulls done on an unaltered GIAC FX K04 Race file. No lemmi or otherwise.
93 deg. F temps at the time of the pulls.
100 oct. blend of e85 and 91 oct. pump gas
a few notes...i logged data and will share bits of it with people who want it...but
-requested Lambda is spot-on requested for fueling
-timing correction nearly 0 0 0 0 through the rev band. cyl 3 pulled 2-3 deg timing mid-range. im thinking that may be a CP ready to go out...no other pull across the board.
-EGT at 840 and below
-knock in the low 20s across 1,3, and 4. higher in 2, which is of course the loudest cyl.
im sharing this info fo the people who think my car will lean out, or that it will blow up, or otherwise. to be honest...you are lucky to see logs this good on a stock car. the ECU is as happy as can be....and in that light here are the results...
red line and blue line are the newest pulls, the green line was my best FX K04 pump gas pull on 93 oct, 75 deg. F.
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correct. the old was 91 file on 93 gas.
the ratio was 70% e85, 30% 91 oct (not e10). that is roughly the max my fueling can safely handle after extensive testing of many mixes. of course, we will continue to develop this further to get to 100% e85...thats gonna require a bit of work.
i would say this as advice to all reading...up here my fueling can handle a little more e85 due to the high elevation and lesser fueling needs on average here. most cars wont be able to run that much as they are closer to sea level.
i would say this as advice to all reading...up here my fueling can handle a little more e85 due to the high elevation and lesser fueling needs on average here. most cars wont be able to run that much as they are closer to sea level.
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Missed the backstory on this; what mods have you done to run E85?
Are you still running effectively a stock GIAC K04 setup (ie no new fuel pumps, same injectors, same software, same fuel lines, VW502 oil)?
Are you just running this for fun here and there, or are you looking at running it long-term?
Are you just running this for fun here and there, or are you looking at running it long-term?
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there is a long-term full conversion plan in the works...
these were just the priliminary tests to see what the existing fuel system can handle. so far so good, but im out of room on the injectors for more e85 (since it needs to flow more...less energy per unit than gas). it was nice to be able to get to 100 octane though...i can run this blend and my race file all day long at a far cheaper cost, consumption adjusted, than race gas.
the drawback is that i dont think i could have gotten there if i werent up here in BFE where the air is so thin. the car needs less fuel to operate here, so i had more room to play.
the drawback is that i dont think i could have gotten there if i werent up here in BFE where the air is so thin. the car needs less fuel to operate here, so i had more room to play.
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it would work just fine....just not this much e85. only someone willing to log...
and log and log and log as i have could find the threshold there. it could be 60%, it could be 50%, who knows!