I dont mess with my trims, I set it and forget it. My car is a daily driver and getting another 5-10 hp seasonally is not worth it to me. I am finding less and less time to with work and family to be with my car. I wish I had the time to do that.

 

you will make more power on race fuel

 

sshhhhh don't tell the masses. blasphemer!

 

Not without adding in timing or adjusting cam angles. If spark and cam timing is tuned for mbt on 93 putting 100 in without changing anything is pointless.

 

Even straight 100 ul is not going to make as much power as e-85. Along with higher knock resistance (110 octane) e-85 brings extra oxygen to the party and more oxygen means more power even if spark advance is kept the same.

 

i don't doubt that racegas will make more power. but e85 being readily available takes the cake for me.

 

e85 has excellent knock resistance but poor on combating pre ignition
e85 will make more power in the lower rpm's then race fuel because of the much slower burn rate
pump e85 is inconsistent on the blending most e85 is blended at the pump not to mention just because the pump is marked 105 oct dose not mean that is what you are getting a 105 oct e85 is all over the place on the octane rating
e85 requires extra money spent on a fuel system

race fuel has excellent at resisting knock and pre ignition
race fuel will out power e85 at any given octane in the upper rpms due to the increased burn rate
race fuel no big bad fuel system needed
race fuel is blended for a specific purpose and will trump e at any given octane but if you are one of those that have to have e85 then be smart and buy a race blended E85 or 98 it is still cheaper then race fuel and you will always know what you are putting in your tank

 

I made more power on e85 then 112 leaded. Now a e85/110 mix? Hmmm...

 

You are not going to convince anyone here. They know it all.

But if you are willing to learn something this site has actual results not forum dribble to back E85 up. Here is the link and below that here is a snippet of race vs E.

What You Need to Know About E85 Ethanol Alternative Fuel - Hot Rod Magazine


To simplify the test, a BigStuff3 engine-control unit with both pump gas and E85 calibrations handy was plugged into the EFI harness. On 100-octane gasoline, the combination made 509 lb-ft of torque at 5,200 rpm and 540 hp at 6,000 rpm. (W2W tests its pump-gas engines on 100-octane for safety's sake, then performs its final validations with 93-octane pump fuel.) With no other changes except in the software calibrations, on E85 the engine made 524 lb-ft of torque and 546 hp. So the numbers were very similar for both fuels, with E85 squeaking out a slight edge. The real difference here, of course, is that one fuel is an expensive racing blend while the other sells for less than regular. And Urban felt that with some optimizing of the spark curve to exploit E85's greater octane, further gains were well within reach.

 

That's what James told me to run. E85 and 110 30/70%

 

This!!! The extra oxygen provided by E-85 makes more power vs race gas (non oxygenated types of course) even if the octane is about the same. More oxygen means more power!!! E-85 is just like injecting a small shot of nitrous oxide on top of running running 110 octane gas (oxygen again here). The only disadvantage to E-85 is 27% greater fuel mass required to have the same btu output (energy content) as gasoline.

 

I made 501 on 112 and 526 on e85, both on 30 lbs.

 

for test purposes, do not mix leaded fuel and e85 together.

 

Seems about right to me from what I have seen as well. It would likely have made around 480 whp on 100 octane UL.

 

E98 is 98% ethanol 2% Leaded 110octane so you would get a combined octane rating of 116octane.
around $6 a gallon Hmmmmm