i remenber someone telling me if i switch to 91 then i get 15 more hp.

im not to sure this is right but i could be wrong anyone know?

and a 110 gain in hp with e85 and a tune.

my friend just got a evo tune with e85 and made 420 on stock turbo
but he said he only made that high because he has a turbo. and it wouldnt do anything for me hp wise
but save me some gas money and get like 35+ mpg

 

WTF?
Stick with the 91 octane.

 

lol but 110 hp... if its true im going e85 haha

but i live in colorado and my friend cant even turn on his car cause
its getting kinda cold here.

so if i even go e85 ima be getting a cold start map

 

E85 is damaging to run in an engine not made for it.

You do not gain hp by running higher octane but you resist knock and detonation which is useful for high performance N/A and turbo charged engines. The other benefit is that "premium fuel" has better cleaning additives which will keep your fuel system and motor cleaner in the long run. Most people only think of it as an octane advantage.

 

hmm i think ill stick to 91 and put in my exhuast and buy a injen intake lol

 

Octane is measured on government approved equipment which counts the knocks per minute. I'm fairly positive that 100 octane is used as the standard thus- 85octane would have knocked 15 times versus 91 octane knocking 9 times. An octane of say 104 would knock 4% fewer times that 100 octane.

 

Yeah the reason he got some much power was because he is turbo and turned the boost way up and was able to run that high boost without getting knock due to the higher octane.
I just use 93 since it is readily available. Car needs 91 or better.

 

alrighty 91 or 93 all the way for me!!

but where can you get 93? i only can find 91 here in colorado

 

Sunoco sells 93. Do you get Sunoco fuel in CO?

 

Sunoco has 93 here in NY. It is typical 2-3 cents more than 91, so it is a no-brainer to run 93 when I have the opportunity.