Beefing Up my Yaris

[Loren]

I'm scratching my head trying to figure out why, with the given goal of 130-140whp, you don't just go with a readily available and proven supercharger kit. You'll end up spending more on a custom turbo kit in the long run.

Expand your $2500 budget to $3000-3400 and you get a plug & play kit that meets your goals without trial and error.

If you want MORE power than that, then you need to go through the trials and tribulations of a custom turbo kit, fuel management, possibly forged internals, lower compression pistons, yadda yadda. But, if all you want is 130 hp...