E85 Tuners Thread
#1
E85 Tuners Thread
Fuel is pump E85
AF's are 11.5:1 in mid-top end, 19psi (sourced from turbo outlet, not yet checked map sensor for manifold boost). Overboost cut set at 21psi, soft revlim starts at 7800rpm
Timing wise I'm using
12deg BTDC @ 13 psi
5deg BTDC @ 18psi
Application 9.4:1 12A mildport, not studs or extra dowels. Stock mazda seals.
Does this sound survivable?
AF's are 11.5:1 in mid-top end, 19psi (sourced from turbo outlet, not yet checked map sensor for manifold boost). Overboost cut set at 21psi, soft revlim starts at 7800rpm
Timing wise I'm using
12deg BTDC @ 13 psi
5deg BTDC @ 18psi
Application 9.4:1 12A mildport, not studs or extra dowels. Stock mazda seals.
Does this sound survivable?
#3
4th string e-armchair QB
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Wait for someone with experience to chime in, but with that much alcohol it seems like you could go a bit fatter up top, it's only a lambda of .78. I know meth is different, but it seems like guys on straight meth go for as rich as .65 (which would read 9's on your AFR gauge)
#4
Wait for someone with experience to chime in, but with that much alcohol it seems like you could go a bit fatter up top, it's only a lambda of .78. I know meth is different, but it seems like guys on straight meth go for as rich as .65 (which would read 9's on your AFR gauge)
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Wait for someone with experience to chime in
#11
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Someone with experience tuning E85, not someone like me who has never done it. The comment wasn't directed at you, it just meant that I haven't actually tuned a car on E85. Dyno charts mean **** all...
#12
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i don't give info that i don't know, it's because i've done plenty cars with e85. if you look in the dyno section for 2nd gen you'd see my dyno chart that i did since 08, if you don't then i'll send you tuning maps and dyno charts of cars. all i was doing was giving my 2 cents of knowledge but since i don't have enough experience in posting videos of cars i will keep silent next time. sorry experience posters.
#13
Viper Eater
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i don't give info that i don't know, it's because i've done plenty cars with e85. if you look in the dyno section for 2nd gen you'd see my dyno chart that i did since 08, if you don't then i'll send you tuning maps and dyno charts of cars. all i was doing was giving my 2 cents of knowledge but since i don't have enough experience in posting videos of cars i will keep silent next time. sorry experience posters.
That's the problem with the rotary community. Everybody keeps their experinces to themselves. Like it's "Top Secret" or something.
We are a small group of people that keeps getting smaller and smaller. We need to ban together and help each other like all the other car groups do.
#14
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that is so true, in reality if i knew how to do certain things on the forum i would even post an ignition map for "Jobro" to see what kind of timing i run. i actually run higher timing than what you posted, but at the same time what works for me might not work for someone else, so when i give info it's a bit conservative. like you said we need to help each other more so we can have more cars on the street running
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I am trying to figure out where to start with the e85 timing on my 9.7 rotors, stock 6 ports. I am currently running 15psi on a t70 with very very conservative timing, only about 5 degrees at 15 psi. would the timing map in post 7 still be roughly applicable minus a degree or 2 across the board?
#17
Rotary Enthusiast
some of the posters say keep spark conservitive, others say have at it!
i suppose when it blows up ,its to much timing. DUH! must be an easier way.
what im sayin is timing the make all-break all, for good power.
i suppose when it blows up ,its to much timing. DUH! must be an easier way.
what im sayin is timing the make all-break all, for good power.
#19
I can not guarantee that my crank pulley is correctly calibrated to my ECU. I can not guarantee that your car is correctly calibrated or the same as mine.
For my operating conditions (which was the summer mix of e85)
13psi - 16BTDC
18psi - 10BTDC
is survibable even without water injection. For 9.7:1 rotors I would use a similar process to what I used. Start at
13psi - 12BTDC
18psi - 5BTDC
and slowly lean on it more and more.
I think theres a reason why my engine has lasted so long and most of it is my process which is impossible for paid labor to do.
For my operating conditions (which was the summer mix of e85)
13psi - 16BTDC
18psi - 10BTDC
is survibable even without water injection. For 9.7:1 rotors I would use a similar process to what I used. Start at
13psi - 12BTDC
18psi - 5BTDC
and slowly lean on it more and more.
I think theres a reason why my engine has lasted so long and most of it is my process which is impossible for paid labor to do.
#20
Viper Eater
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Found out our cars love around 12.3:1 AFR's on E85.
Before I was running in the 11's. Leaned it out and it made my car a completely different car. VERY noticable improvement and pretty much detonation proof!
I have a friend who ran 40PSI at 14:1 AFR's on E85 and it didn't do a thing to the motor.
Before I was running in the 11's. Leaned it out and it made my car a completely different car. VERY noticable improvement and pretty much detonation proof!
I have a friend who ran 40PSI at 14:1 AFR's on E85 and it didn't do a thing to the motor.
#21
I won't let go
So you mentioned you're original timing chart was a little conservative. Can you post what you're running now? Unfortunately I'm 5000 miles away from my car, else I'd make these changes this weekend. Guess it'll have to wait. I can't post up my timing either as I don't have my maps with me.
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Found out our cars love around 12.3:1 AFR's on E85.
Before I was running in the 11's. Leaned it out and it made my car a completely different car. VERY noticable improvement and pretty much detonation proof!
I have a friend who ran 40PSI at 14:1 AFR's on E85 and it didn't do a thing to the motor.
Before I was running in the 11's. Leaned it out and it made my car a completely different car. VERY noticable improvement and pretty much detonation proof!
I have a friend who ran 40PSI at 14:1 AFR's on E85 and it didn't do a thing to the motor.
I just wouldn't want someone to read this and calibrate a meter to E85, run 1.27 lambda and be crazy lean.
I'm guessing the friend is running a piston engine?
#23
I won't let go
Which I think most people do anyway; leave the WB calibrated for gas.
Perhaps it would be best to just reference lambda for all AFR conversations just so there's no confusion.
Perhaps it would be best to just reference lambda for all AFR conversations just so there's no confusion.
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