You can feel the difference between the 12 and 14, you will like it. The 205/50/15 tires do help but make sure they are grabby. Hard to drag race with a touring tire.

 

Kumho have some sticky street legal racing tires I want to buy.
About e85, I fill her up with e85, aftet running with 95 oct.
The car felt sudenly slow. Cant get under 16 sec in a 1/4 mile.
Oh, Maby its because I unpluged the converter. Try to plug it on again.
Ive asked my self, if e85 do Any good in performance, our, is it just nesesary when doing high comp our turbo?

 

Just as an FYI for anyone who later reads this thread and wonders what the final answer on E10 (aka 90% gas, 10% ethanol) is.....there is no issue with using E10.

I have a 1995 Neon SOHC and use E10 almost exclusively. Got 40K miles on it (after the rebuild) and have no issues using it. Yes, your gas mileage is less then if you use pure gas, but I drive about 50 to 60 miles every day, stop and go traffic, and still average 34 mpg. I don't imagine if I switched that my mileage would increase enough to justify the cost difference. I use it only because they sell it cheaper per gallon then 100% gas. With the federal subsidy for ethanol now gone, that may not be true for long, so if 100% gas ends up costing the same as with ethanol, then of course I would rather use it and gain the extra miles.