Hi everyone:
I have an 04 wrx wagon, 5mt, currently at cobb stage 2.
I am thinking of changing the stock turbo to a vf34 and ithe stock njectors to sti pinks . I have reviewed several dyno graphs of stock cars and vf34 cars and on paper at least the vf 34 swap seems better than stock in most respects...
so does anyone have any driveability drawbacks that they experienced after this swap?
Is your off-the-line torque decreased; ie is the car harder to accelerate from a stop smoothly?
any feedback appreciated.

Thanks!

 

i have one

less gas mialge and it takes alittle longer to spool up

 

i've just installed mine yesturday and havent yet opened her up...but i have noticed what sigma pi has said...major difference in spool time. i noticed when i was just driving normally i was never on boost (i usaully am w/the stock turbo) on half throttle the boost would slowly rise (compared to stock) and when it hits its like a nice kick in the pants....

 

this is useful info, thanks sigma and playa.

hey, speaking of mileage what kind of difference would you say (in mpg)?
Any difference in idle smoothness?

 

well, i cant really saythe exact mpg...i just noticed its been going down faster than usual...and for smoother idle...i got a txs rfl ...so my idle sux :P lol

 

average with the stock turbo was 320-310 on a tank im now at 280

on a side not the best i ever did on the stock turbo was 375 miles

 

...my car pulls like a raped ape! does idle rough tho and im still kinda scared to pound it.

 

You won't notice any city drivability problems, because you are not spooling then. I have a VF-34 and I can't tell the difference unless I am on it, then it just hauls ***

Austin