Just like the title says what octane for a 90 na? What do you use? I know 1st gens like 87...

 

87

 

82 idealy.
The long combustion chamber means it's hard for all the gas to be burned. So for an NA always buy the lowest octance grade available.

If you run higher octane combustion becomes less efficient, you throw more gas out the exhaust, and horsepower is decreased.

 

Yes^

 

where can u get 82 octain now days??

 

id like to knwo this as well hehe
last time i went to the track didnt see any low octane racing fuel......may have to travel to hiroshima for this

 

if you put more than 87 octane in youll be wasting gas. the motor wont completely burn all the fuel if you go higher than that, it will just spit raw fuel into the cat/exhuast. and seeing how it doesnt burn all the fuel you will loose efficiency.

 

86 from sunoco