Premium Gas

[jdium]

Originally Posted by forpinks

Go buy a "Maximum Boost" book and it will tell you that a higher octane gas will give you more power compared to lower octane gas.

there is a comparison on the N/A and Turbo there really is a big difference especially if your running RPMs higher than 4500 on N/A... The turbo with high octane gas is damn more powerful than low octane.

Also the 106HP (not high performance? I know.) is achieved using high grade high octane gasoline for testing (Since Japan don't have anything lower than 93 octane they even have 120-125 octane) the engine power will drop to 100flywheel HP when you use 87 gas and it will make more gunk to the engine because of the slight combustion difference even with the knock sensors, remember the 1NZ-FE is japan made and tested so It should run 90+octane and will get 51MPG elsewhere except US (may be possible with acetone) which don't have anything higher than 93 basic fuel 100 octane cost like 4.30 vs 3.30 91...

(It's new here in the USA and Toyota USA wouldn't put the 91 reccomended fuel since it will hurt sales...)

Hope this helps!!!

Ignorance is bliss eh? Higher octane will NOT give you more power in a Yaris. Go buy some dyno time if you can't believe me. It will NOT give you higher mpg either. Put the car on jack stands, and idle a tank away of each if you can't believe me either.

On a turbo car, higher octane allows more boost, thus higher hp.

Knock sensors have nothing to do with engine "gunk" buildup.

If it was possible for the Yaris to get 51 mpg in the U.S., it would. Why would Toyota not want a car that destroys every other car in its class? Try 51 kpg maybe.

The Yaris is sold in America. I think the Toyota engineers are smarter than us.