This is from a local tuner not on the boards...Car has a BBK Full turbo at 30 psi spike, kelford IX 272's, all other bolts ons. I know the injector scaling is way off but how does this timing map look? Ill find out later tonight what load Im spiking to and holding. Also, it seems that most people run a 12.0 AFR on E85. Is that what most are still doing?

Thanks

 

I dont run E-85, but I would say there is a lot of room left at peak tq. I run more pk timing than you on 91. 4*

I did just read your other thread, so maybe because of the knock issue...

 

Yes this map was made with STOCK knock sensor settings. I think he just used clean runs, or at least as clean as he could get.

 

Go to the alternative fuel section and look at the timing maps there. You should get a pretty good idea of what is capable.

 

At 30psi?

 

good point!

 

Actually looks pretty good........

 

Thanks for the replies everyone, so no suggestions to change anything? Keeping in mind that I dont really have any knock control so no knock sums to go off of. Not that it would be that helpful on E85 anyway. Also, 12.0 is still what most of you are using for a E85 AFR?

 

I don't notice much of a power loss running as rich as low 11's on E85. E85 is more of a coolant than gasoline is.

 

Why do you not have any knock control?

 

My other thread.

https://www.evolutionm.net/forums/ec...-problems.html

 

Don't use ethanol for fuel, but from any research done on it regarding it's burn characteristic for load vs RPM I read that is has a more linear relationship. Basically when compared to gasoline, it's burn rate changes less, so at redline timing isn't advanced as much relative to peak VE. A flatter timing profile. This is just on paper though

 

So no suggestions for any changes then? Anyone?

 

Dude, you shouldnt ask for suggestions based on the picture of the map. Map doesnt tell much, except a general idea. There need to be at least logs/graphs to see how smooth you timing changes with RPM and there def needs to be tuning to see how YOUR car responds to timing changes..

 

im on meth, but your peak torque numbers are same/lower than my pump 92 gas.
Now uptop your timing looks good I myself am around 22 at 7500RPM.
I say change your 3's to 5 and you still should be very safe.
question is what a/f are you running at?