Volks AutosChris Nott
Results 1 to 12 of 12
  1. #1
    Yohan87's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    May 2011
    Posts
    404

    Exhaust Questions - Relentless Manifold/De-Cat Noise?

    My current setup is as follows: -

    Engine - 1.8T AMK
    Downpipe - Pipewerx 3" with 200cpsi sports CAT
    Cat-Back - Milltek Resonated

    The car is R-Tech mapped to 280bhp and drives very nicely and is quite a peaceful place to be when driving at any speed.

    Q1) Would replacing the sports cat with a de-cat offer anything performance wise?

    Q2) I'm thinking about fitting a Relentless/XS Power manifold in the near future, do these alter the exhaust noise a fair bit? Have only seen one video on youtube which wasn't that great.

  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    S3 Paul's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Oct 2006
    Posts
    2,764
    Ive got the pipeworx down pipe and decat and before/ after there is a bit more spool noise and a rush of air through the exhaust. I personaly like it but i could see some not being a fan.
    Noggy Blue 2001 S3

    I ask questions because i change my mind so much. If i ask questions you have already covered... just leave it be?

  4. #3
    Yohan87's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    May 2011
    Posts
    404
    Thanks Paul, a rush of air/spool noise I could live with, it's more a boomy drone I'm worried about.

    Just trying to see if the "performance" gain is worth the extra noise.

  5. #4
    S3 Paul's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Oct 2006
    Posts
    2,764
    I had a little more drone/ boom when my miltek was resinated. I bought the un resinated section and the noise is strangely more refined now and much easier to live with,
    The only time it even seems noisey ( not realy but if your being picky ) is when on tickover from cold goes quiet after about 2 min
    Noggy Blue 2001 S3

    I ask questions because i change my mind so much. If i ask questions you have already covered... just leave it be?

  6. #5
    Jimgrim77's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Nov 2011
    Location
    Clevedon, Near Bristol
    Posts
    957
    Quote Originally Posted by Yohan87 View Post
    My current setup is as follows: -

    Engine - 1.8T AMK
    Downpipe - Pipewerx 3" with 200cpsi sports CAT
    Cat-Back - Milltek Resonated

    The car is R-Tech mapped to 280bhp and drives very nicely and is quite a peaceful place to be when driving at any speed.

    Q1) Would replacing the sports cat with a de-cat offer anything performance wise?

    Q2) I'm thinking about fitting a Relentless/XS Power manifold in the near future, do these alter the exhaust noise a fair bit? Have only seen one video on youtube which wasn't that great.
    Sport cat / decat performance gains are subjective. Sounds would be more noticeable.

    Xs power manifold creates far more noise from the engine bay but in a very good way. When mapped, torque and bhp are greatly improved as the engine is far more free flowing. It's an pain to fit but immense. throttle response is also noticeably better.

    You can pick up the version 2 from Sam Bryant, on here, for about £197. You won't regret it.

    Ming Blue S3, Stage 3 Hybrid Turbo, Custom Map, Bosch 480 injectors, Custom TIP, Forge FMIC, 3" Downpipe, 200 Cell Sport CAT, Full Stainless, XS Power Mani, 6 Paddle Clutch, Red silicone hoses, LCR Brembo's, Forge 007p, KW Suspension Kit, Green filter, THS Mounts, 11mm & 16mm spacers, H&R Anti-roll bars, RS6 18" alloys, Michelin PS3's, Red Dog Bone Mount, Neuspeed quickshift, Boost Gauge, Aero wipers, LCR splitter, Forge Tie-bars, LED bulbs, Armrest, Custom TT pedals.

  7. #6
    Yohan87's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    May 2011
    Posts
    404
    Thanks for the feedback guys :-)

  8. #7
    Chugger

    Status
    Offline
    Join Date
    Nov 2009
    Location
    North Devon
    Posts
    2,716
    I had an xs power mani and down pipe fitted onto standard exhaust and it didn't make much more noise at all... Iv since fitted a single box power flow system and it sounds ridiculous outside, but in the cabin it's fine, even on the motorway.
    57 A3 2.0 TDI Sportback (140)

  9. #8
    Yohan87's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    May 2011
    Posts
    404
    Any of the XS mani users got videos?

  10. #9
    Jimgrim77's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Nov 2011
    Location
    Clevedon, Near Bristol
    Posts
    957
    Quote Originally Posted by sportstractor View Post
    I had an xs power mani and down pipe fitted onto standard exhaust and it didn't make much more noise at all... Iv since fitted a single box power flow system and it sounds ridiculous outside, but in the cabin it's fine, even on the motorway.
    I'm really suprised at that but you will know better of course. The xs power mani on mine totally changed the car noise. You can really hear the whooshing of the air around the engine bay now.

    Perhaps mine was assisted by the stage 3 hybrid that I had installed at the same time but interesting that your experience differs. I wonder if others had the same.

    Ming Blue S3, Stage 3 Hybrid Turbo, Custom Map, Bosch 480 injectors, Custom TIP, Forge FMIC, 3" Downpipe, 200 Cell Sport CAT, Full Stainless, XS Power Mani, 6 Paddle Clutch, Red silicone hoses, LCR Brembo's, Forge 007p, KW Suspension Kit, Green filter, THS Mounts, 11mm & 16mm spacers, H&R Anti-roll bars, RS6 18" alloys, Michelin PS3's, Red Dog Bone Mount, Neuspeed quickshift, Boost Gauge, Aero wipers, LCR splitter, Forge Tie-bars, LED bulbs, Armrest, Custom TT pedals.

  11. #10
    Jimgrim77's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Nov 2011
    Location
    Clevedon, Near Bristol
    Posts
    957
    Quote Originally Posted by Yohan87 View Post
    Any of the XS mani users got videos?
    I'm on the rolling road again tomorrow/Friday and i'll post a video then With the bonnet up so you can gauge it in all it's glory under duress. Hoping to head further north of 310.

    Ming Blue S3, Stage 3 Hybrid Turbo, Custom Map, Bosch 480 injectors, Custom TIP, Forge FMIC, 3" Downpipe, 200 Cell Sport CAT, Full Stainless, XS Power Mani, 6 Paddle Clutch, Red silicone hoses, LCR Brembo's, Forge 007p, KW Suspension Kit, Green filter, THS Mounts, 11mm & 16mm spacers, H&R Anti-roll bars, RS6 18" alloys, Michelin PS3's, Red Dog Bone Mount, Neuspeed quickshift, Boost Gauge, Aero wipers, LCR splitter, Forge Tie-bars, LED bulbs, Armrest, Custom TT pedals.

  12. #11
    Yohan87's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    May 2011
    Posts
    404
    Thanks, look forward to it.

  13. #12
    Yohan87's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    May 2011
    Posts
    404
    Did you manage to take a video?

 

 

Similar Threads

  1. S3 Noise on Relentless Downpipe/Sport cat
    By sideways steve in forum A3/S3 Forum (8L Chassis)
    Replies: 9
    Last Post: 21st October 2012, 00:23
  2. Anyone had problems with XS/Relentless Manifold?
    By IrishDave in forum A3/S3 Forum (8L Chassis)
    Replies: 27
    Last Post: 10th April 2012, 15:35
  3. Replies: 16
    Last Post: 14th March 2012, 10:24
  4. People with the relentless down pipe and sport cat
    By Andrew@A.L.D in forum A3/S3 Forum (8L Chassis)
    Replies: 11
    Last Post: 23rd September 2010, 22:23
  5. Fitting a 3" Cat back stainless exhaust to a standard Cat
    By g60leigh in forum A3/S3 Forum (8L Chassis)
    Replies: 1
    Last Post: 11th July 2010, 16:14

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO