Joshcivic00

Ok i know i need to run 93 octane so that i do not risk detonation!!My question is i have a 1/4 tank of 89 octane right now and that i am planning on putting my turbo kit on tommorow i just want to know if i can just fill the rest of the tank up with 93 octane and just take it easy till i run the tank out,if ill be ok???thanks

delsol161

i dunno if it's really important or not... but to be safe, i'd fun as much out as possible, then get a full tank of 93. i small amount of 89 wo't dilute the 93 enough to cause huge trouble.

SICK BOY

just dont boost it. take the wastegate spring out or stay way low in rpms.

delsol161

won't he have to re-tune it w/ 93 octane though?

Provocateur

Personally, I would just leave it.

All we have out in California is 91 octane and my GSR (which requires premium fuel stock) runs at 8 psi daily without a problem, so I doubt it would dilute it any more than just a full tank of 91.

Provocateur

Doubtful.

Firstly, the emanage that comes with the turbo requires an extra harness to do ignition timing and that is what would be off when switching from lower octane to higher octane.

Secondly, the emanage is there mainly for getting the car running and drivable. I wouldn't waste my time tuning it because it sucks. The daily check engine lights and OBD2 learning around it aren't even worth the money spent on dyno time or a wideband. If you are going to tune with something, make it something worth tuning.

Thirdly, if you do decide to tune it, I doubt it would be anywhere before that initial tank of diluted gas is used, so it won't be an issue.

delsol161

cool. i've never run a turbo, so i'm learning now to avoid issues when i decide to get boosted. good to know...

Paulll

I had the same problem last week. My car had about 1/2 tank of reg, so i burned it down to E, filled about 3 gals of 93, which im burning down now. When i get the car tuned, I will fill it to the top with 93.


I would run reg with a turbo, even if you dont beat on it.