cool.. thx

 

^ nils your going to love it I have been running it for 6 months now+ we are lucky to have so many pumps in town!

 

I love E85, and although my experience tuning C or Q16 is somewhat limited, I think that given the same timing and apropriate AFR on both, the gasoline should actually make more power.. My assumption behind this is that the ethanol does not have as much combustion energy as gasoline even when used with proper mixture, not to mention by volume.. Someone correct me if I am wrong

 

I have been on E85 for a little over a year and a half, and I won't go back. The only time my car see's anything but E85 is when I have to take the car on a long trip, and then I need the mileage out of regular gas. E85 in my experience is extremely forgiving as well, which is nice.

 

FCON and E85 together works magic with a good tuner

 

what if your car was tuned for E-85 and on a long trip had to put 93-94 in it how will that effect your car? Do you need to be careful not to let it hit full boost it due to the lower octane, and chances of detonation? and vise versa?

would that be a big problem switching between the two fuels? Would I also need to worry about mixing them? Say having less than a 1/4 tank of 93 and filling up with E-85 would it be ok to run the E-85 map?



The reason why I ask is because I'm thinking to have my car tuned for both maps, with a switch to the AEM. So if I want to get loose I'll just find an e-85 pump, fill up, flip the switch and run the E-85 map. I just don't want to blow anything up!

 

No, if your tuned for E85, you want to keep E85 in the tank, and vise versa. If you were tuned for E85 and you put gasoline in, you car would probably eat that tank of gas alive from running soo rich. If you go the other way, it would probably run too lean to where it would be very difficult to drive.

You would also want to try and depete as much E85/Gas from your tank as you can before switching just as a precaution. Usually your first tank "switch" isn't too bad if you fill it up after your fuel light has been on for a bit. (Just take note how much fuel your car takes when you do fill it up, that way you know how much gas/E85 was left in the tank.

Why switch to an AEM? The stock ECU's can be modified with Map Switching now. There is almost no point in going Standalone anymore...

 

Thanks for the advice, yeah that's what i would typicaly do anyways for 93, and race gas, but there are way different in in octane levels. I wasn't sure if they would be similar enough to get by, or how they react at all because of the fuel being 85% ethanol. I currently run 93 and denatured alcohol injection, I have no idea how this affects one another.

I already have an AEM ECU, and deal with the crappy starts, I got rid of the stock ECU in 2007. I like the AEM It has it's advantages, like when you blow off IC piping, or rip off an IC, after hitting a deer, it'll keep the car running till you get home.

 

Yes, have 1000's and tuned already.

I was just curious as I am trying to maximize power.

 

I keep hoping they'll open more E85 stations where I live, but so far no luck

 

I have experience with both fuels the op is curious about, so I will throw in my .02 cents. I made 389whp and 345wtq @30.5 psi on C-16 on a mustang dyno, and on E85 I made 402whp and 370wtq @28 psi on a dyno dynamics. The only difference mod wise between the two was bigger injectors. Everyone who had been in the car on both tunes said hands down it felt WAY more powerful on the corn fuel. Oh and you can't beat the price difference.

 

And after looking at my sig I forgot to mention this was on E70 winterblend(tested and confirmed by tuner). The car was tuned in Minnesota and now that I'm back in Cali I have yet to have it re-tuned to see what kind of power can be gained(if any) between the two blends.

 

DB Performance tune FTW!

 

E85 > C16 For the Price Difference

 

Wow..old post but interesting info. I thought Q16 was the way to go.