One of my freinds has a turbo from an sti and I justed wanted to know which turbo the sti's use and if it would bolt into my 03 wrx or if will require any special modifications besides the supporting mods

 

VF-39, pretty sure it's a direct bolt on. Pretty popular upgrade for the WRX.

 

yes, its a direct bolt on. You will however need a CobbAP, Ecutek reflash, UTEC or other EM along with larger injectors(& a fuel pump) to run it safely.

 

how much power could I make with that set up

 

260-290whp depending on the dyno used.

 

why not spend lil more get something else

 

Is the upgrade relitively safe? Can the stock block handle this turbo for a awhile or will you be hurting the motor and have to fix it in a year? (under the conditions on normal driving with "getting on it" ever once in a while)

 

dont forget to upgrade the intercooler, fuel pump, injectors, and then reflash it.

 

depends on WHO is tuning. Just about any turbo can be safe or unsafe, it ALL depends on WHO is tuning.

short answer: yes, you'll be safe.

I ran a VF30(very similar to the VF39 but with a 'bit' more topend) for around 20k miles. I'm now running a TD05H-20G which is quite a bit larger than the VF39, I've been running it for over 20k-25k miles along with alcohol injection on a pretty aggressive tune(326whp/292wtq @ 21psi), I'm still safe considering my engine has ~85k miles on it.

 

Will the VF34 turbo work just as good?

 

yup...

 

Thanks.