vf 43 - Subaru WRX Forum
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#1 Old 03-11-2007, 10:32 PM
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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.
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#2 Old 03-12-2007, 07:52 AM
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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!

Homebrewed tuned with Opensource!
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#3 Old 09-18-2007, 05:31 PM
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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
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#4 Old 09-18-2007, 06:35 PM
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^ the vf43 is a direct bolt on for the wrx off of the 07 sti's

bigger and better than ever
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#5 Old 09-18-2007, 09:15 PM
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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
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#6 Old 09-18-2007, 09:23 PM
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yeah, but 06+s' run bigger injectors stock then the older models.
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#7 Old 09-19-2007, 09:34 AM
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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.
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#8 Old 09-19-2007, 09:07 PM
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720s will be more than enough.

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02 rex is gone.
I defected to an evo :)
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Now I got nothing.
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#9 Old 09-20-2007, 12:33 AM
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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
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#10 Old 01-01-2008, 07:54 AM
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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.
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#11 Old 01-09-2008, 08:37 PM
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[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??
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#12 Old 01-10-2008, 05:07 PM
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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
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#13 Old 01-11-2008, 04:50 PM
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Quote:
Originally Posted by nicolas316 View Post
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

Nope. the vf-43 is off an 07 sti....same motor as the 06-07 wrx...2.5 liter woot woot...
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#14 Old 01-11-2008, 04:55 PM
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[QUOTE=07wrxguy;182568]
Quote:
Originally Posted by blackasblack View Post
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??


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...
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#15 Old 01-11-2008, 05:06 PM
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Quote:
Originally Posted by blackasblack View Post
Nope. the vf-43 is off an 07 sti....same motor as the 06-07 wrx...2.5 liter woot woot...
They are not the same motor. They just are both Boxer-4 2.5L. They have quite a few differences.

04 STi 16G powered lagless fun
04 WRX: SOLD
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