Is there a mind boggling difference between 89 and 91 octane?

[GhettoFabulousCRX]

What kind of car?

[STiSchucky]

dude. lol.

04 STi

[Bp-08]

this is a joke right?

[DrifterExtreme]

do it, then report back

[Rexwagon]

dont fill it up with 89 retard. the computer is mapped for 91. it probably wont blow up, but it wont like it.

[Joel]

Cmon Kirk. Really? If I were you, I would put 91 pr 92 with no ethanol. You have a Race car....

[aliengotpsi]

Kirk I would not even think about puting 87-89 octane in your car.. Just sell your turbo kit or swap it with someones stock sti stuff... And I speak on behalf of everyone..

[STiSchucky]

Thanks for the help guys!

Also only 1 name call to, must be a record, big ups rex wagon

[weshole]

Glad we have 92 oct here. But ya, nothing lower than 91 on a turbo engine. Youll notice the loss of power instantly and may even hear ping on accel.

[YellowEvo]

Buzzed/Drunk threads ftw

[Afsil80]

I my 93 octane. I've got about 4 E85 stations within 5 miles of my house, haha.