Noob need help !

[beZzZ]

Originally Posted by Bluevitz-rs

Yeah, other than the fact that some premium fuels might have more additives and cleaners to their gas, use regular and the money saved can be put towards a bottle of injector cleaner every 6 months or so. Every tank would be a couple of bucks at least.

Also, the 1NZ-FE with a 10.5:1 C/R does have a high enough compression to use 91 or higher octane fuel, but the computer's program limits timing so that is runs on regular 87. I know a guy running a Stand Alone ECU on his N/A Echo and has increased his timing by 10° up to around 42° at the upper end of the RPMs and has gained roughly 7-8hp alone from that and premium gas.

You have to remember that this engine was designed with one thought. Fuel efficiency.

I totally agree to your last sentence, Yaris is built for Fuel efficiency. I will definitely go back to 87, save up more to get the injector once in a while.

Anyway, just wondering waht does ECU mean?