Had a half day of dyno at viezu bromsgove (formally chipped uk) yesterday to see just what the ppp would actually acheive, as the norm seems to be these dyno well under the claimed 305bhp (car is 02 sti uk ppp standard bar panel filter) i was happy with...
296bhp 313lb/ft all runs were consistant ie lowest 293bhp highest 296bhp and it was a warm day too..
the high light of the day though was my brothers 06 sti bassed on these mods..
vf34
perrin fmic
hks headers
hks fcom ecu
hks cold air kit (mushroom in wing)
full de-cat 2.5" exhaust
cars top run was 381bhp 365lb/ft which i felt was high for a vf34??
also had a leon cupra r mapped before run made 216bhp after 242bhp then after changing the panel filter and fitting a stronger re-circ d/v (standard was leaking boost) it made 262bhp

 

Yeah the VAG plastic type ones are crap (recirc valve) the forge replacement ones really improve the car.

 

Do you mean your brother swapped the std VF43 for a VF34?

381/356 actually sounds like it has pretty low torque but the power is in the right area.
But as RRs vary so much then it is so hard to comment. Did he RR it mean totally standard?
This would a more useful comparison.

 

can this be changed on the standard wrx car without a remap ?

 

I was making that statement towards the Volkswagen Audi Group valves neil. You could change an original subaru on for an uprated forge recirc version, but i feel it wouldn't be worth it as the subaru ones are actually very very good at their job.

 

The car was originaly a 265bhp uk sti not sure if it had a vf43 standard as although its an 06 reg it is a late blobeye not a hawkeye so think it was a vf35??? I have just spoken to him and it was in fact 381bhp 365lb/ft so i got the 5 and the 6 the wrong way round

 

would defo be a vf35 he had as the vf43 was standard on the 07sti and
the 06 sti had the vf39

 

thats alot of power out of a vf35. how was this acheived so well when other cars can have same mods but get less power an torque

 

If you live in America

VF43 MY06+ UK

VF39 is USDM

 

Good figures then for VF35 and 2.0 engine with a well balanced set of mods.

Tomwrx- only the US STis had the VF39 until the hawkeye (06)- then all global 2.5 STis got the VF43 until the hatchback was released.

 

just to sort the confussion out the car made the 381/365 with a vf34 fitted NOT a vf35!!!! the vf35 was in relation to what was fitted to the car originally i can confirm it had a vf35 originally still seems good power though on the vf34

 

The PPP gives the car 301 BHP, so not too bad really if as you say it was hot

 

was it 301bhp for the ppp on an sti then i thought prodrive claimed it to be 305bhp??????

 

305 PS is what subaru/prodrive claim not BHP, i made the same mistake when i first got my car

 

In my experience the PPP power claims are never made. These cars are typically 295/296 bhp with PPP.
The UK STi had the VF35 turbo as standard and with all supporting mods these will do typically 340 bhp sometimes marginally more and the VF34 will typically up to 360 bhp. I am not sure I have heard of any on a reliable rolling road making any more and in any case they don't move enough air to make more but remember that different rolling roads will give different figures.
The VF39 and VF43 are good turbos and fitted to Jap spec cars.

 

VF43 is a UK spec turbo from the EU/UK 2006 sti

 

yup, sure is, my last RR figures with the only diffrence being an aftermarket cotton panel filter (simotek) was 329/375, i was well chuffed.