Just wondering how much power I can expect to get to my wheels with a Turbotoyotas or Dezod kit and a good tune, everything else stock except for a magnaflow catback. My main goal atm is to be able to keep up with my friend's stock 08 STI, will I be able to do it?

 

yes. assuming ud get the simple or s1 kit either one of those tuned at 8 psi would wreck a STi on a roll. 1 thing though if ur exhaust inner diameter isnt 2.5" or greater get a new one.

 

This will depend HEAVILY on tuning and supporting mods. I have had customers range from 245-300whp on just 8 PSI, while some customers have reached over 400whp on 14 PSI with good tuning.

 

On either kit, assuming the following:

1.) 8-9psi (on at least a 50trim turbo)
2.) good tune
3.) No issues with install (like boost or exhaust leaks)

You should make somewhere between 260-300whp with a full exhaust. There's a 40hp margin there because every car is different, the tune may not be perfect, dyno type, air temp, etc etc. But that's a ballpark.

I think from a roll you shouldn't have an issue with the STi.. but someone else with experience please chime in here.

 

Correct. The biggest deal comes from install. Some people get plagued before they even start.

A stock STi dynos at around 225whp, so on 8 PSI, there should not be a prob rolling all over that Scooby.

 

i raced a 08 sti when at 250-260ish whp on a street tune and pulled on him but he caught up and i lost by a bit..

now im pro tuned with 310whp.. i think i will take him EASILY!!!