uppipe, underdrive pulleys, turbo back, mbc, intercooler hoses. it'd also be better if you got some sort of engine management to go along with the mods, like a unichip or reflashed ecu.

 

I'll pick the reflashed ecu over the unichip anyday.

 

vishnu stage 0 or stage 1 with emi harness.

 

 

You are obviously on a tight budget so here's what you need to do. This is what I did in the very begining.

First get a manual boost controller. Turboxs sells one that works really good for $129. I've used thier boost controller for 14k miles on my car without any issues. Set your boost around 16 psi. This all by itself will put your WRX in the 13s if your a good driver.

Then as you have cash start getting exhaust pieces. The down pipe and mid pipe will make the most hp. The muffler/rear end section is mostly for sound and doesn't offer much hp gains. Then get an up pipe.

With full turboback exhaust, up pipe, and manual boost controller you can pull easy low to mid 13s if your a good driver.


Later on if you decide to upgrade your turbo you can get some sort of engine management (Unichip, UTEC, etc) These are very expensive and not necessary with the stock turbo. Others may argue but if your on a budget I would stay away from engine management at this time.

I know plenty of guys running mid 13s with just mbc's and exhaust mods. They have been running this setup for 30k miles without any problems. So this is you best setup if your on a tight budget and you want performance.

 

stock boost is what... 13.5 psi?? so running 15-16 psi would be ok with nothing else modded? also, doesn't the boost monkey control the amount of boost regarding the partial throttle full boost issue. i read that it can set the boost not to fully build until a given throttle position, i.e. 75% depressed.