best performance mod for your $$$

[ilikerice]

.it made an amazing difference in mine as well as using 91 octane gas

correct me if im wrong, but i dont think it really matters with stock 1nz engine if you put 87 or 91 octane in your tank. a stock 1nz has low compression anyways and has no real gain in power other than burns cleaner. i know as a crx owner for a decade that the stock 1.6L sohc wont produce any hp from 91 octate to 87. i personally think its more frame of mind that u put something that someone else uses thats tuned for it so u think the cars is quicker, but its really not..
i know this goes true with crx, but i could be wrong with the yaris, if im wrong i will convert to 91 octate today