supporting mods for vf39/vf43 on an 07 wrx

Discussion in 'Modifications & DIY how-to' started by AtlxPat, Jan 31, 2009.

  1. AtlxPat

    AtlxPat Active Member

    Im sure this has been asked plenty of times, but what is needed on a 2007 wrx to run a vf43, i heard they dont need bigger fuel injectors or even a fuel pump.
    just a 3'' turbo back and maybe a protune for my cobb ap? and a tmic/fmic
     
  2. Trancetto

    Trancetto Active Member

    Im about to run a vf39 and my supporting parts will be:

    3" DP 3"catback
    pinks
    EWG setup
    i might go for a bigger TMIC

    and...might be few more things that i cant remember
     
  3. Strayen

    Strayen Active Member

    AtlxPat, all you need to do is have a high flow cat or catless downpipe and catback that is 2.5 or 3". the downpipe should be 3". And engine management. TMIC from an STI will work.
     
  4. Trancetto

    Trancetto Active Member

    most important thing.
     
  5. Mike@TTR

    Mike@TTR Active Member

    Should not need injectors. Your stock ones flow more than pinks ;)
     
  6. AtlxPat

    AtlxPat Active Member

    Yea i already have a full turbo back and cobb ap v2. the cobb exhaust tapers down to 2.5 but im gonna get that changed to a full 3'' at a muffler shop

    thats great to hear!:coolugh:
     
  7. yerrow

    yerrow Active Member


    '02-'05's need injectors and a pump but '06/7's don't they were upgraded oem already
     
  8. Trancetto

    Trancetto Active Member

    Yeah, i already knew that about 02-05, but didn't know that about 06+.
     
  9. Mike@TTR

    Mike@TTR Active Member

    I would still look into doing a fuel pump as it is cheap and easy insurance :) Not only that when you decide to put a BIG turbo on there one day, it is one less thing to worry about!
     
  10. pEd

    pEd This ain't no Piccadilly!

    Just listen to what Strayen said. He's got that same setup and it runs very nicely and put down good #'s.
     
  11. Trancetto

    Trancetto Active Member

    what is he running, vf39?

    And yea i forgot to add fuel pump to my list.
     
  12. Mike@TTR

    Mike@TTR Active Member

    Ped and I installed the fuel pump in a little under an hour. It's pretty easy once you rip the back seat out.
     
  13. Jake

    Jake Active Member

    i think his is a 43, same difference. just bigger wastegate to eliminate issues from the 39.

    i wanna do a externally gated 39/43 on my swap..... whenever that day comes.
     

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