Ok so I know the 1nzfe is a bored out 1.3 but what I don't get is why can't we reach numbers like the 4age?

http://hachiroku.net/forums/showthread.php?t=17462

This engine produces 86whp on the dyno, similar to our 84-90whp in the 1nzfe.
The link I provided covers a build with a 4age producing 149hp NA. Of course it has ITB's etc but the build is only $5000. While that may seem like alot to n00bs it seems VERY reasonably priced compared to a 5-6k turbo build. Numbers are very similar and bottom end/ mid range is better making it more drivable on the street.

The only thing setting the 1nz-fe back is the cam timming and duration. This is also without exhaust mods....

I know I ask alot of NA questions, but say someone got a AEM FMIC or emanage Ultimate and ran a 93 octane tune? Obviously pulley's, flywheels, etc...

Do our cars have clutch fans? removing the mechanical clutch fan on the 4age added 6hp even after replacing it with an electrical one...

Otherwise is swapping in the 4ag is possible with the stock tranny I have one I can swap in

 

Only need this once...

https://www.scionlife.com/forums/viewtopic.php?t=265967