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  1. #1
    Established Member Two Rings
    Join Date
    Apr 14 2008
    AZ Member #
    27700
    My Garage
    '18 A6 3.0 Prestige, '14 A6 3.0 TDI, '17 Q5 3.0
    Location
    NY

    Loud Pop & Then Loud Exhaust Need Help

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    Where do I start? Looked underneath without jacking it up and see nothing, maybe the pipe popped off but didn't drop down. Of course it's the first day that it snowed here and there was a cold rain too. Could it be a DV??

  2. #2
    Veteran Member Four Rings vce1232000's Avatar
    Join Date
    Jun 17 2013
    AZ Member #
    117368
    My Garage
    83 MK1 GTI Callaway Turbo stg II
    Location
    jersey city nj

    Flex pipe coupler on the dp
    APR KO4, APR HPFP,RS4 LPFP Cntr,145 bar PRV, APR TP, TT DP, GFB DV+, AWE FMIC, BFI CC, AWE Exhaust, RS4 Exh tips, ST CO, 034 RSB,034 St Dnsty Mtr Mts, New Sth West Bst guage, B7 RS4 8 pot Calipers.Goodridge SS brake lines frt & rr. Hawk HPS frt & rr. RS4 PS rack, RS4 Servotronic Relay,RS4 rims. S4 mirror caps,DTM frt bmpr and rs4 fogs,LED tail lites
    S4 Recaro Front & Rear seats. Led Interior Kit,United LED's fog lites
    2007 A4 Avant 2.0T Tiptronic 6spd

  3. #3
    Veteran Member Four Rings yeoj112689's Avatar
    Join Date
    Aug 17 2013
    AZ Member #
    121191
    Location
    Rossford, Oh

    Quote Originally Posted by dadman View Post
    Where do I start? Looked underneath without jacking it up and see nothing, maybe the pipe popped off but didn't drop down. Of course it's the first day that it snowed here and there was a cold rain too. Could it be a DV??
    The DV wouldn't make your exhaust loud like a open pipe would. Is it super loud? Or just a bit louder? You probably broke something off on your exhaust. Only way to know is to look but I would bet on the flex pipe like vce said. Unless someone messed with your exhaust I doubt you blew out your mufflers :D
    || 2006 Audi A4 Quattro 2.0T || Mods and stuff

  4. #4
    Veteran Member Three Rings deusilan's Avatar
    Join Date
    Aug 17 2012
    AZ Member #
    98834
    My Garage
    '89 E30 325i; 2005.5 2.0TQ 6-spd
    Location
    Stinky Island, NY

    Quote Originally Posted by vce1232000 View Post
    Flex pipe coupler on the dp
    The coupler that connects the muffler tubing to the downpipe? That coupler rusted on me and eventually the pipes fell out and were hanging on by the rubber hangers.
    Currently: 2005.5 A4 2.0 (Red)TQ 6-spd, WORK IN PROGRESS 2011 Police Interceptor
    Previously: E30 325i, donated for track purposes

  5. #5
    Established Member Two Rings
    Join Date
    Apr 14 2008
    AZ Member #
    27700
    My Garage
    '18 A6 3.0 Prestige, '14 A6 3.0 TDI, '17 Q5 3.0
    Location
    NY

    It's very loud, I don't see anything hanging but I didn't jack it up yet. Still looking for a large EVAP leak (0455) I wonder if it's connected to that somehow. Will look at the flex pipe and underside tomorrow. Thanks

  6. #6
    Veteran Member Four Rings vce1232000's Avatar
    Join Date
    Jun 17 2013
    AZ Member #
    117368
    My Garage
    83 MK1 GTI Callaway Turbo stg II
    Location
    jersey city nj

    With a partially blown flex pipe coupler you will not it hang down per say. The rubber hangers pretty much keeps the pipe in place.
    APR KO4, APR HPFP,RS4 LPFP Cntr,145 bar PRV, APR TP, TT DP, GFB DV+, AWE FMIC, BFI CC, AWE Exhaust, RS4 Exh tips, ST CO, 034 RSB,034 St Dnsty Mtr Mts, New Sth West Bst guage, B7 RS4 8 pot Calipers.Goodridge SS brake lines frt & rr. Hawk HPS frt & rr. RS4 PS rack, RS4 Servotronic Relay,RS4 rims. S4 mirror caps,DTM frt bmpr and rs4 fogs,LED tail lites
    S4 Recaro Front & Rear seats. Led Interior Kit,United LED's fog lites
    2007 A4 Avant 2.0T Tiptronic 6spd

  7. #7
    Veteran Member Four Rings Okedokey's Avatar
    Join Date
    Oct 24 2015
    AZ Member #
    363505
    Location
    Perth, WA

    Sounds like you've blown an exhaust somewhere.
    A4 B7 2.0T | HPFP upgrade + FMIC | BSR Stage II + exhaust + HFC | 3.0TFSI Throt. Body | RS4 fuel contr., PRV + S3 inj., G247 + DW300c | GFB DV+| 034 RSB + all arms and mounts | S4 brakes | B12 Bilstein suspension + H&R springs | RNS-E + Polk Audio PA D5000.5 - 4 x DB6502 + DB840DVC sub + Pioneer 10" sub | LEDs throughout | 19" Audi 2015 RS4 rims

    My respray thread

  8. #8
    Established Member Two Rings
    Join Date
    Apr 14 2008
    AZ Member #
    27700
    My Garage
    '18 A6 3.0 Prestige, '14 A6 3.0 TDI, '17 Q5 3.0
    Location
    NY

    Separated where the front pipe clamps to the rear pipe, it's a wide double clamp, looks fairly easy to fix if I can pull the rear part forward a little. The rear section is banging against something too, need to see if a hanger broke or it's just from the front being disconnected.

  9. #9
    Veteran Member Four Rings vce1232000's Avatar
    Join Date
    Jun 17 2013
    AZ Member #
    117368
    My Garage
    83 MK1 GTI Callaway Turbo stg II
    Location
    jersey city nj

    Those clamps are well known to rust out. Easy
    APR KO4, APR HPFP,RS4 LPFP Cntr,145 bar PRV, APR TP, TT DP, GFB DV+, AWE FMIC, BFI CC, AWE Exhaust, RS4 Exh tips, ST CO, 034 RSB,034 St Dnsty Mtr Mts, New Sth West Bst guage, B7 RS4 8 pot Calipers.Goodridge SS brake lines frt & rr. Hawk HPS frt & rr. RS4 PS rack, RS4 Servotronic Relay,RS4 rims. S4 mirror caps,DTM frt bmpr and rs4 fogs,LED tail lites
    S4 Recaro Front & Rear seats. Led Interior Kit,United LED's fog lites
    2007 A4 Avant 2.0T Tiptronic 6spd

  10. #10
    Active Member Two Rings atvhead's Avatar
    Join Date
    Sep 06 2016
    AZ Member #
    380266
    My Garage
    A4
    Location
    NH

    FWIW I replaced mine with what seemed like a good quality oem type clamp but I just couldn't get it to not leak, so I went to an auto parts store and picked up a straight piece of exhaust pipe, I think it's 2 1/4 ID, and use traditional exhaust pipe clamps. Works great. And was only 10 bucks total.
    2007 A4 2.0T AWD....100% stock!

  11. #11
    Veteran Member Four Rings vce1232000's Avatar
    Join Date
    Jun 17 2013
    AZ Member #
    117368
    My Garage
    83 MK1 GTI Callaway Turbo stg II
    Location
    jersey city nj

    APR KO4, APR HPFP,RS4 LPFP Cntr,145 bar PRV, APR TP, TT DP, GFB DV+, AWE FMIC, BFI CC, AWE Exhaust, RS4 Exh tips, ST CO, 034 RSB,034 St Dnsty Mtr Mts, New Sth West Bst guage, B7 RS4 8 pot Calipers.Goodridge SS brake lines frt & rr. Hawk HPS frt & rr. RS4 PS rack, RS4 Servotronic Relay,RS4 rims. S4 mirror caps,DTM frt bmpr and rs4 fogs,LED tail lites
    S4 Recaro Front & Rear seats. Led Interior Kit,United LED's fog lites
    2007 A4 Avant 2.0T Tiptronic 6spd

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