Rear diffuser removal

Registered User
  • Jul 6, 2015
  • #1
  • So this was my job today

    Sorry if this has been put up here already but I was doing it today and took some picks so thought I’d stick it up

    1: locate back bumper, at rear of car

    2: underneath you will find 3 torx screws T25 remove all 3

    3: once these are out its really just a case of pulling the diffuser part away from the back bumper towards you, I’m quite a big guy and it took a fair pull to get it to start so don’t be shy, start at either side depending what hand is easier and pull to the middle

    Only thing I would say is be careful at the thinnest part right about the tail pipes as the rest still has a good hold and too much force could bend it

    4: Basically that it pull the whole lot off job done

    5: when replacing its worth a few squirts of fairy liquid onto the clips as this helps it slip in nicely

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    ianv5

    Registered User
    • Jul 6, 2015
  • #2
  • Registered User
    • Jul 6, 2015
  • #3
  • Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    JG51 AUD

    Registered User

    • Jul 6, 2015
  • #4
  • I colour matched the diffuser on my A4 and now on my A5, not many people do this, but I think it looks good.

    Nice job chop.
    JG

    2016 S5 Black Edition, 3.0 Supercharged.
    F&R Camera’s, Led interior, reverse & number plate lights, RS5 Fr. brakes, R8 oil & coolant caps, 20 & 25mm H&R spacers, Xenonz rear diffuser, 19.5″ T325’s + 19″ Black Ed Plus Alloys, 034 Trans Mount, ADS, Sweeping indicators. CR-15 front strut brace. CTS Intake. AWE Touring inc Resonated DP’s, H&R Springs,Bilstien b8 shocks . RS5 interior door handles.
    MRC Stage 1 ECU & TCU Remap.

    Sold — 2008 A4 B8 2.0 TDI
    Sold — 2012 A5 b8.5 2.0 TDI Black Ed.

    ianv5

    Registered User
    • Jul 6, 2015
  • #5
  • Registered User
    • Jul 6, 2015
  • #6
  • Yeh mine was grey didn’t match any other part of the car but most importantly it wasn’t black !!

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    JG51 AUD

    Registered User

    • Jul 6, 2015
  • #7
  • The A4, Dynamic diffuser.

    Not the best one of the A5, but the only one I have just now, hope they help.

    2016 S5 Black Edition, 3.0 Supercharged.
    F&R Camera’s, Led interior, reverse & number plate lights, RS5 Fr. brakes, R8 oil & coolant caps, 20 & 25mm H&R spacers, Xenonz rear diffuser, 19.5″ T325’s + 19″ Black Ed Plus Alloys, 034 Trans Mount, ADS, Sweeping indicators. CR-15 front strut brace. CTS Intake. AWE Touring inc Resonated DP’s, H&R Springs,Bilstien b8 shocks . RS5 interior door handles.
    MRC Stage 1 ECU & TCU Remap.

    Sold — 2008 A4 B8 2.0 TDI
    Sold — 2012 A5 b8.5 2.0 TDI Black Ed.

    Archies

    Active Member
    • Jul 6, 2015
  • #8
  • Registered User
    • Jul 6, 2015
  • #9
  • Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    razza1

    Registered User

    • Jul 6, 2015
  • #10
  • Registered User
    • Jul 6, 2015
  • #11
  • If you have the same chrome bar as me it in screws from the back so would be easy to take off and then paint diffuser

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    ianv5

    Registered User
    • Jul 6, 2015
  • #12
  • The A4, Dynamic diffuser.

    Not the best one of the A5, but the only one I have just now, hope they help.

    razza1

    Registered User

    • Aug 4, 2015
  • #13
  • Registered User
    • Aug 4, 2015
  • #14
  • Yeh you need to be careful at the tail pipe section but still give it plenty force, mine started doing the same but being as hashy as I am I bashed on and it came off

    You keeping the chrome bar then ?

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    razza1

    Registered User

    • Aug 4, 2015
  • #15
  • Sod that, problem is you have to start at a tailpipe section, could see it starting to actually tear before about to break. It might have come off with a tug, but couldn’t risk it tbh. Trying to colour it up cheap and s new diffuser doesn’t fit that criteria

    You’re a brave/crazy guy for getting yours off

    razza1

    Registered User

    • Aug 4, 2015
  • #16
  • Registered User
    • Aug 4, 2015
  • #17
  • Diy is the way to go

    Haha thanks, years of being an hgv fitter when in doubt brute force and ignorance get the job done ( one way or another )

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    Registered User
    • Feb 7, 2017
  • #18
  • Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    Noo3thou

    Noo3thou
    • Feb 7, 2017
  • #19
  • Registered User
    • Feb 7, 2017
  • #20
  • Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    LostUlsterman

    Registered User
    • Mar 8, 2017
  • #21
  • Attachments

    xpoweruk

    TTTS 8J Smile Machine
    • Mar 8, 2017
  • #22
  • LostUlsterman

    Registered User
    • Mar 8, 2017
  • #23
  • Chris Nelson

    Audi S4 B8.5 Black edition. APR stage 2+ 495bhp
    • Mar 9, 2017
  • #24
  • Good post chop mate. Im having mine sprayed gloss black because that grey goes with nothing on the car. Dont know why it wasnt black as standard

    sent from my portable telephone box

    Audi S4 B8.5 Ibis white Black edition
    APR Stage 2 plus 495bhp

    GloGiacomina

    «keep moving forward,thats how winning is done»
    • Mar 15, 2017
  • #25
  • Registered User
    • Mar 15, 2017
  • #26
  • @GloGiacomina ‘ the beast ‘ I like that

    If you could get a couple of plastic trim tools or something like that you might be able to lever the clips off between the bumper and the diffuser without marking anything once you get it started it’s not too bad it was just the first bit that’s the worst

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    TechNick

    Registered User

    • Mar 15, 2017
  • #27
  • ^This!
    Start from the middle and work outwards. If you’re worried about damaging the paint on the bumper, put some masking/detailers tape on first to lever against.
    Refitting is the reverse — i.e. angle it downwards slightly and hook the outer clips in first, raise it to the correct height and pop them in from the outside inwards.
    Done this successfully a few times now, given my background!

    Alternatively (and probably safest way), remove the bumper first to get to the clips from the inside.
    I’m reassured this only actually takes a few minutes (customer received and fitted one of my diffusers yesterday by following this guide — http://www.audizine.com/forum/showthread.php/389043-DIY-Removing-Rear-Bumper-Valence).

    TechNick

    Registered User

    • Mar 15, 2017
  • #28
  • Meemo

    Registered User
    • Mar 17, 2017
  • #29
  • «»5: when replacing its worth a few squirts of fairy liquid onto the clips as this helps it slip in nicely «»

    *resists rude comment..

    I definitely like the butt in Black on yours

    Registered User
    • Mar 17, 2017
  • #30
  • Haha no idea what your talking about @Meemo

    Yeh the black was good while it lasted, its anthracite just now to match the wheels

    Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    GloGiacomina

    «keep moving forward,thats how winning is done»
    • Mar 24, 2017
  • #31
  • TechNick

    Registered User

    • Mar 24, 2017
  • #32
  • Registered User
    • Jul 18, 2017
  • #33
  • Follow me on Instagram black _audi_s4

    Past motors.. BMW 318d, BMW X5 4ltr V8, BMW 530d, Honda Civic Type R, Evo iv with vi engine, Mk 3 Astra GSI, and more than a handfull of Mk 2 astra GTEs

    GloGiacomina

    «keep moving forward,thats how winning is done»
    • Jul 18, 2017
  • #34
  • ^This!
    Start from the middle and work outwards. If you’re worried about damaging the paint on the bumper, put some masking/detailers tape on first to lever against.
    Refitting is the reverse — i.e. angle it downwards slightly and hook the outer clips in first, raise it to the correct height and pop them in from the outside inwards.
    Done this successfully a few times now, given my background!

    Alternatively (and probably safest way), remove the bumper first to get to the clips from the inside.
    I’m reassured this only actually takes a few minutes (customer received and fitted one of my diffusers yesterday by following this guide — http://www.audizine.com/forum/showthread.php/389043-DIY-Removing-Rear-Bumper-Valence).

    TechNick

    Registered User

    • Jul 18, 2017
  • #35
  • I’ve got mine to hand as just replaced my diffuser again at the weekend, as it happens, as part of the last minute prep for VAG Tuner Live!

    I’ve got a selection of them, but these 2 are my favourites — the larger ‘crow bar’ one for the upper centre section, then the smaller one for the curved outer edges.

    Using these 2 tools I swapped out the diffuser in just a few minutes, even with the huge exhaust tips in the way!

    Just search for ‘plastic trim removal tool’ on eBay — loads to choose from!
    Some detailing tape around the edges of the bumper/tips helps protect them during the process too

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