certainly stores like PEP-BOYS, NADA and others would seem to talk you into buying a bottle of Octane booster, and pouring it in the tank, especially for the turbocharged cars....

My Q is, is this a good idea for the EVO (assuming you're on your way to the track, and want the quickest, cheapest possible extra few horses) ?

I think thats its useless at best, or even detrimental... but the store staff are reassuring me that i am wrong...

ideas please -

 

it will boost your octane not even one whole number more. you wont see any difference in power

 

it won't help at all

 

Go with meth

But no, you won't see a difference

 

just run some race fuel as a mixture with your super. i do it a decent amout and my car runs awsome, feels faster on race fuel, and smells awsome but seriously go get some 110 an mix it with your super.

 

Not worth it because it doesn't increase the octane level high enough to be beneficical.

 

You might see a difference.. if you buy a 6-pack and put them all in at once.. But i wouldn't waste my money on it.

 

Don't waste your money on that crap. Buy some beer for yourself instead !!!

 

yup+1 with what everyone said, not enough to make a difference.

 

adding race gas to my tank is a great idea. whats a good mixing % ?

like 2/3 tank of 93oct, and 1/3 tank of 110oct ??


P.S. oh, and will i need a different tune after i add race gas??

 

There are a couple products that boost the octane rating of your gas by a significant amount. Sport Compact Car magazine did some tests and found a couple that worked. NOS Racing Formula stands out in my head. It's not street legal if that matters to you. I decided against using it because of potential spark plug fouling issues but you can do some research and decide for yourself.

 

Race gas by itself will not yield any power increase. Simply put, the reason for race fuel is it ability to resist detonation and allowing more boost and timing safely.

In other words, yes you need a tune to take advantage of the race fuel that you are running.

 

great answer

 

You are in brooklyn, Pm me if you need a race tune tune.

 

When they claim it raises octane by (for example) 5 points, it usually means by 0.05, based off what I have read