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Pontiac G8 GXP rear diffuser

Discussion in 'VE Holden Commodore (2006 - 2013)' started by redvess, Dec 12, 2009.

  1. redvess

    redvess Member

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    thought I'd clue up people on here on a relativley cheap and simple mod to change the look of the back end of your VE's cos I havnt seen it mentioned anywhere on here yet. The pontiac GXPs got a different lower section on the rear bars heres some pics of the difference

    standard
    [​IMG]

    GXP
    [​IMG]

    I just got myself one today and I'm going to fit it up next weekend due to it requireing a bit of modification to make it fit cos for some reason the mounting points are slightly different. they only cost around $60 from holden spare parts and the number is 92213320

    heres a few more shots of some fitted to SS's

    [​IMG]
    [​IMG]
    [​IMG]

    I'll put some pics up of mine once its fitted
     
  2. mi04se1

    mi04se1 need for speed

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    That is on my future mod list. On mine, it bolts right up. But, I have a G8GT.
     
  3. redvess

    redvess Member

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    ah lucky bugger, yeah ours have the tabs in differnt spots for some weird reason

    ours

    [​IMG]

    yours

    [​IMG]

    you can see the slots are slightly different
     
  4. k3v0

    k3v0 New Member

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    yeah saw this on the LS1 forum. looks pretty good and was gonna get it but then decided to do it when i can be bothered. Lol
     
  5. davey g-force

    davey g-force I'm a sceptic...

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    Hmm interesting - thanks for sharing that redvess. I think I like it!

    Let us know how you go with the installation. :thumbsup:
     
  6. Coast_Calais

    Coast_Calais sick of the idiots here

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    nice one redvess!

    yeah, do let us know how the install went (some pics would be great).
    I like the look of this, but would like a heads up on the cut'n'shut to fit it :D

    Good luck!
     
  7. davey g-force

    davey g-force I'm a sceptic...

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    I don't know about anyone else, but I find the honeycomb on the SSV rear diffuser very hard to keep properly clean.
    The G8 diffuser would eliminate that problem.
    Plus it looks smoother and neater too.
     
  8. redvess

    redvess Member

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    ok got it fitted up today wasnt as hard as I thought it would be I was going to get a mate to help me that fitted one on his car but he never showed up so I attempted it myself with the help of a write up on the LS1 forum and was was easy as

    ok steps for fitting (I've used a few shots from the guy from LS1 instead of taking the same shots myself hope he doesnt mind if he see's this)

    First you need to take out the three clips underneath seen here

    [​IMG]

    they pop out if you pry them with a flat blade screw driver or something like that
    then you need to take out the two side clips located here

    [​IMG]
    [​IMG]

    his ones were just clips but I found mine were screw in clips so they were a bit harder to get out, had to pry them first then screw them out, must depend on the year model as to which you have

    next you have to unclip the 4 in the middle which is a bit fiddly trying to get your hand up into where they are

    [​IMG]

    again mine were screw clips so it was a pain trying to get them out, then with all the clips out pry the tabs clear of the bar so you can pull the diffuser off

    heres the difference between the 2 (my Pics)

    [​IMG]

    so this is where you have to modify the GXP part, trial fit the diffuser with the 2 outside tabs inserted cos these are the only 2 that fit at this stage then score along the other tabs with the screw driver where they need to be cut then cut them with some side cutters making sure you dont cut too much better to cut too little than too much
    so it should look something like this with the modified tabs

    [​IMG]

    once you get it to fit snug you need to drill holes for the clips to fit in I only drilled 3 for the ones underneath but the other guy drilled holes in a few of the tabs like the origional ones but mine didnt need them it fit snug without them so I only drilled here

    [​IMG]

    but if you want to use the other clips you drill here where the blue and red arrows are

    [​IMG]

    before you drill the lower 3 push the diffuser as far back as you can and hold it there while marking the holes so it'll sit tight once you put the clips back in

    last step is to swap the reflectors over which is just one phillips head screw in each then its cliped in on the other side

    and thats all it takes heres some pics of what it turned out like starting with a before shot (I forgot to take one today)

    before
    [​IMG]

    after
    [​IMG]
    [​IMG]
     
  9. tomholzy

    tomholzy New Member

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    nice,
    thanks for the write-up,
    im going to try this now as you have outlined it!!
     
  10. Coast_Calais

    Coast_Calais sick of the idiots here

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    thanks for the write up! :thumbsup:
     
  11. davey g-force

    davey g-force I'm a sceptic...

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    Wow, I really do like the G8 diffuser better.

    Thanks for that redvess. :thumbsup:
     
  12. tomholzy

    tomholzy New Member

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    im trying to get a hold of one of these diffusers, im in brisbane and no holden parts have heard of them, also tried the number redvess gave and no respone??
     
  13. kuzman89

    kuzman89 Active Member

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    These wouldn't fit the ute would it?? The Wagon is similiar to the ute but I have my doubts
     
  14. tomholzy

    tomholzy New Member

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    ah found them: holmart.com.au
     
  15. redvess

    redvess Member

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    dont think they would, the ute has a different rear section to the sedans and wagons from what I can see

    direct link for anyone that wants to buy them from there (New Genuine) VE -G8 (GXP) REAR DIFFUSER
     
  16. tomholzy

    tomholzy New Member

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    awesome guide,
    i printed this out and did it this arvo,
    thanks redvess
     
  17. KARTAL

    KARTAL New Member

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    a bit off topic but can i ask if your spoiler is the g8 lip one that they sell @ holmart and also if so does it cover the original spoiler holes?
    diffuser looks hot btw.. :)
     
  18. redvess

    redvess Member

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    no worrries glad I could help you out :beer chug:

    thanks, yeah its the G8 lip but it only covers up 2 of the holes towards the back the other 2 I have rubber plugs in but it looks ok still
     
  19. mi04se1

    mi04se1 need for speed

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    Got my diffuser today, should be on this afternoon.
     
  20. ve_alloytec

    ve_alloytec New Member

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    i love the look of it on the ve, but is it hard to do and is it worth it???
     

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