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-   Bolt-on Tech (EJ255/EJ257 2.5L '04-07 STi and '06-07 WRX) (http://www.wrxtuners.com/forums/f75/)
-   -   vf 43 (http://www.wrxtuners.com/forums/f75/vf-43-a-17066/)

drex 10983 03-11-2007 10:32 PM

vf 43
 
Has anyone here done an 06 wrx turbo swap with the stock 07 sti's vf43 yet????
wondering on the outcome and if its a direct replacement like the vf39 is. Fitment issues, etc.

dumdum 03-12-2007 07:52 AM

Yup,direct replacement.Maybe need to retune the wastegate duty cycle and compensation maps but the VF43 is basiclly a redesigned VF39 without the boost creep issue!:D

VD5505 09-18-2007 05:31 PM

so will the VF43 bolt right up to a 04 WRX i know i will have to change the fuel injectors, i already got the fuel pump and EM taken care of as well all the exhaust

wrx3r 09-18-2007 06:35 PM

^ the vf43 is a direct bolt on for the wrx off of the 07 sti's

VD5505 09-18-2007 09:15 PM

sweet thanks alot for your help!!! i just bought a brand new VF43 turbo for 650 bucks from a guy he didnt use it or anything and needed money

turmic 09-18-2007 09:23 PM

yeah, but 06+s' run bigger injectors stock then the older models.

VD5505 09-19-2007 09:34 AM

i have a set of 720cc injectors i think those will work just fine i just got bigger ones so they dont have to work as hard.

WRXKidid775 09-19-2007 09:07 PM

720s will be more than enough.

VD5505 09-20-2007 12:33 AM

i know they are kinda big but i got a pretty good deal on them and i just thought these wouldnt have to work so hard so kinda a win win deal lol

blackasblack 01-01-2008 07:54 AM

I just put a VF43 on my car and pulled 281 awhp 311 wtq on a mustang dyno.

Installed so far:

k&n drop in
sti tmic
VF-43
helix catted dp
3 inch massiv road series exhaust
grimmspeed up
Cobb V1 AP with a Protune on 91 cali gas

This is all on an 06 wrx wagon.

stock injectors and fuel pump.

07wrxguy 01-09-2008 08:37 PM

[quote=blackasblack;181728]I just put a VF43 on my car and pulled 281 awhp 311 wtq on a mustang dyno.

Installed so far:

k&n drop in
sti tmic
VF-43
helix catted dp
3 inch massiv road series exhaust
grimmspeed up
Cobb V1 AP with a Protune on 91 cali gas

This is all on an 06 wrx wagon.





that is sick. i just bought a new vf 43 and cant wait to get it on the dyno. did you do a real agressive tune like max out the turbo or anything im hoping to get numbers like those but i dont wanna over do it. how is the car runnin??

nicolas316 01-10-2008 05:07 PM

dont you guys need to change engine internals?? arent you risking breaking the engine with a bigger turbo or the engine internals can handle the power?? i have a 07 2.5 wrx does it handle the preasure?
NICOLAS

blackasblack 01-11-2008 04:50 PM

[QUOTE=nicolas316;182671]dont you guys need to change engine internals?? arent you risking breaking the engine with a bigger turbo or the engine internals can handle the power?? i have a 07 2.5 wrx does it handle the preasure?
NICOLAS[/QUOTE]


Nope. the vf-43 is off an 07 sti....same motor as the 06-07 wrx...2.5 liter woot woot...

blackasblack 01-11-2008 04:55 PM

[QUOTE=07wrxguy;182568][quote=blackasblack;181728]I just put a VF43 on my car and pulled 281 awhp 311 wtq on a mustang dyno.

Installed so far:

k&n drop in
sti tmic
VF-43
helix catted dp
3 inch massiv road series exhaust
grimmspeed up
Cobb V1 AP with a Protune on 91 cali gas

This is all on an 06 wrx wagon.





that is sick. i just bought a new vf 43 and cant wait to get it on the dyno. did you do a real agressive tune like max out the turbo or anything im hoping to get numbers like those but i dont wanna over do it. how is the car runnin??[/QUOTE]



No not overly aggressive. I'm boosting 17psi. And the power is more linear it pulls steadily to 6k then tapers. the torque is amazing especially coming out of corners...!Thumbs Up

mosc 01-11-2008 05:06 PM

[QUOTE=blackasblack;182788]Nope. the vf-43 is off an 07 sti....same motor as the 06-07 wrx...2.5 liter woot woot...[/QUOTE]

They are not the same motor. They just are both Boxer-4 2.5L. They have quite a few differences.


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