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What type of octane should I use on a GTP

Stinger357

Stinger357

New member
I have been using 87 octance will that bog the car down or should I have mid grade or high end octane? Any ideas?
 


87 will cause it to detonate if going into boost.

I've run 87 before, but that's when I drove without my S/C belt.
 
I'd suggest premium fuel absolutely..
The car will go into the low timing table if it detects enough KR -- Not the most optimal way to go about it but it DOES work..

These cars knock even on 93 bone stock. PM me about a tune if you insist on running regular though once you get your ride back on the road.
 


txslow6 said:
Awesome for bumping 2 month old thread.
Click to expand...

LOL

I ran 87 on a 3.1 pulley l26 bottom with no KR. AFR in the 10s at wot just like a canned tune.

I would suggest 87 for someone who just drives their Stock car. BUT if you want to drive it hard or think its a race car you should use 92.
 
gmpowered said:
LOL

I ran 87 on a 3.1 pulley l26 bottom with no KR. AFR in the 10s at wot just like a canned tune.

I would suggest 87 for someone who just drives their Stock car. BUT if you want to drive it hard or think its a race car you should use 92.
Click to expand...

Yeah, sounds like a great idea.
 
My Harley manual calls for high octane (91 or better) as does my GTP manual. A lot more painful in the GP though with a 17 gallon tank.
 




Wanna know something?

Texas is gay.

Everywhere else its .20 to .30 more for 91+, you'd out of your mind to buy gas thats .50 more 91+. and running your tank that low is going to kill the fuel pump faster.
 
I used to always see a price for regular, +.$10 for midgrade, +.$10 for premium. Now it's always marked way higher.

Sam's club around here often has 93 for .30 more opposed to other stations being more, so I normally buy gas there.
 
Fivefingerdeathpunch said:
Wanna know something?

Texas is gay.

Everywhere else its .20 to .30 more for 91+, you'd out of your mind to buy gas thats .50 more 91+. and running your tank that low is going to kill the fuel pump faster.
Click to expand...

Lookup canadia prices.

10-20 cents per litre for 39-78 cents per gallon for 7-13 dollars per tank.
 
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