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  1. #1
    Veteran Member Four Rings mrpeterparker's Avatar
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    Oct 17 2007
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    01 Silver B5S4
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    minneapolis, mn

    Piggie Pipes or Cat Back ... performance for the dollar?

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    Between the VAST piggie pipes and say a decent cat back exhaust system.. which is money better spent? on overall performance...

    also is there an audio/video clip of a stock s4(or stg 1) with just the piggie pipes? wonder how much different it sounds with just the piggies

  2. #2
    Senior Member Three Rings YBLEGL's Avatar
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    Sep 22 2006
    AZ Member #
    11910
    My Garage
    2001.5 AUDI S4
    Location
    BOSTON

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Well I have done both and I would rather do the Piggies then the exhaust, they are well worthe it and they are cheaper then any exhaust for the most part. They make the turbos alot louder and easier to here the whistle they also let the boost come on a little earlier. I would do both or just piggies if I didnt have the cash for both
    MAINTENCE AND STAGE 3 INSTALLS DONE, PM ME, MASS/ RI LINE AREA

    2001.5 S4 SILVER 6 SPEED BUILT BLOCK AND SINGLE TURBO KIT WITH PTE 6262.

  3. #3
    Veteran Member Four Rings McKennaS4's Avatar
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    Sep 24 2006
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    My Garage
    2500 dodge ram diesel
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    Boston, MA

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    not only do you increase flow, thus increasing power, a catback also brings to the table weight reduction, a drop dead sexy exhaust note, and some pretty tips =) i say 100% go with the catback first! piggies sound pretty close to stock on a stock exhaust and although they increase flow fcoming from the manifolds, your stock catback will decrease the flow thus netting less increase in power compared to a ne catback exhaust. gl bro!
    01 Casa sedan 6MT, sport, cold

  4. #4
    Veteran Member Three Rings Rajan147's Avatar
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    Nov 23 2007
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    Columbus, OH

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    i got stock exhaust and piggies, big difference and i've only got k03's. Its going to sound even better with a catback. I would say it was a mod def worth doing, plus it gives me time to think about which cat back i want.

    Food for thought.

    1. I get into boost quicker
    2. Backpressure relief
    3. A little more throaty/aggressive note
    4. Hear the turbos more (turbo spool)
    5. Not extremely loud and obnoxious
    B5 S4 AWE Stage 3 - sold

  5. #5
    Veteran Member Three Rings Bimmer2Audi's Avatar
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    Sep 10 2007
    AZ Member #
    20979
    My Garage
    2001.5 Audi S4
    Location
    G.R. Michigan

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    I went through the same thing, and decided to go for Catback first. Honestly if you can gut the DPs yourself, do both at the same time...
    B5 S4 6MT Stage 2+
    JFONZ GWERKS-AWE Twin 1-SSAC-JHM FMIC-H&R Springs-BBS CH's 18x8.5

  6. #6
    Veteran Member Four Rings flips4's Avatar
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    Oct 27 2006
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    01.5&06 S4,04 MCS,08RangeRover, Ducati 848, YZ250F, and lots of TOOLS!
    Location
    Ocean Springs, MS

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    piggies def first
    If it aint broke... Dont fix it!

  7. #7
    Senior Member Two Rings nocturnals4's Avatar
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    Dec 10 2007
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    23248
    My Garage
    '00 S4, '94 Z28
    Location
    P-dena,Maryland

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Performance for the dollar?? Piggies are FREE!! Thats the whole point. If you have any mechanical abilities, just do the piggies yourself. Took me 3/4 of a saturday to save myself the $300+. Then you dont have a decision to make about which to buy first.
    Last edited by nocturnals4; 04-01-2008 at 07:05 PM.

  8. #8
    Veteran Member Three Rings Bimmer2Audi's Avatar
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    Sep 10 2007
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    2001.5 Audi S4
    Location
    G.R. Michigan

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Quote Originally Posted by nocturnals4 View Post
    Performance for the dollar?? Piggies are FREE!! Thats the whole point. If you have any mechanical abilities, just do the piggies yourself. Took me 3/4 of a saturday to save myself the $300+. Then you dont have a decision to make about which to buy first.
    Mos def. Its just turning bolts and a couple bucks for gaskets and C02 Elimintaters.
    B5 S4 6MT Stage 2+
    JFONZ GWERKS-AWE Twin 1-SSAC-JHM FMIC-H&R Springs-BBS CH's 18x8.5

  9. #9
    Veteran Member Four Rings mholme's Avatar
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    Jan 29 2007
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    My Garage
    08 S4 00 S4
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    MD

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Save the money for the cat-back and do piggies+ cat-back in the same day/weekend. I just picked up a true dual cat back last week to go with my piggies. It sounds a lot better and you can really hear the turbos spooling now, even over the exhaust note.

  10. #10
    Veteran Member Four Rings
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    Dec 06 2007
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    Calgary, AB, Canada

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    You just have to consider which will yield you more exhaust flow if you are concerned about which will give you greater power gains and extend turbo life. They are both contained within the same system, so whichever restricts exhaust flow less, will be more worth while. Having said that, I agree with the above, do the piggies in your garage in an afternoon and buy the cat back.

  11. #11
    Active Member Four Rings
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    Dec 11 2006
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    Boston

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Get downpipes and hack off the rest of the exhaust, 2 for 1
    Stage 3+ RS6's

  12. #12
    Veteran Member Three Rings Jsmooth65's Avatar
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    Aug 10 2007
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    '15 BMW M235i, '04 A4 1.8t
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    Castle Rock, CO

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Am I missing something? I thought you had to weld on o2 bungs. Not everyone can weld.
    2004 Audi A4 Sedan, Auto, Black, 1.8T Beater
    SOLD - 2007 Audi S4 Sedan, 6spd, Sprint Blue, JHM tune, JHM trio, JHM LWFW and stg3 clutch, Magnaflow RS4 exhaust, LED tails, TTRS SW
    DEAD - 2000 Audi S4 Sedan, 6spd, Laser Red, FRANKENTURBO Stage 3 VAST Fueling (25psi), ER Intercoolers w/shrouds, SSAC DP and Twin 2, JHM trio, APR Bipipe, VAST Stage 3 clutch and LWFW, Sterns mounts, 034 ICM delete/coil conversion, Vogtland coilovers

  13. #13
    Veteran Member Three Rings RuS4ty's Avatar
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    Mar 13 2006
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    VA / MT

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    ^that is one option if you decided to relocate the O2s, but a lot of people just use eliminators.

    I did piggies first and cat-back second. I honestly didnt notice that much difference with just the piggies, besides heading the turbos better and a little quicker spool time. But after installing the cat-back the difference is increase is awesome. The weight you save too makes a big difference.
    *NEW Addition: Misano Red RS4
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    For sale(pm me for details):
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    Stock S4 swaybar

    "I'd have one of those... if I were the sort of person that looked at my sister and thought, mmm..." - Jeremy Clarkson about the Roush Mustang.

  14. #14
    Veteran Member Three Rings Jsmooth65's Avatar
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    Aug 10 2007
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    '15 BMW M235i, '04 A4 1.8t
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    Castle Rock, CO

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    Quote Originally Posted by RuS4ty View Post
    ^that is one option if you decided to relocate the O2s, but a lot of people just use eliminators.

    I did piggies first and cat-back second. I honestly didnt notice that much difference with just the piggies, besides heading the turbos better and a little quicker spool time. But after installing the cat-back the difference is increase is awesome. The weight you save too makes a big difference.
    OK. relocate o2 sensors to maintain emissions passability in states where they test at the pipe, or celiminators if they don't. Right?
    2004 Audi A4 Sedan, Auto, Black, 1.8T Beater
    SOLD - 2007 Audi S4 Sedan, 6spd, Sprint Blue, JHM tune, JHM trio, JHM LWFW and stg3 clutch, Magnaflow RS4 exhaust, LED tails, TTRS SW
    DEAD - 2000 Audi S4 Sedan, 6spd, Laser Red, FRANKENTURBO Stage 3 VAST Fueling (25psi), ER Intercoolers w/shrouds, SSAC DP and Twin 2, JHM trio, APR Bipipe, VAST Stage 3 clutch and LWFW, Sterns mounts, 034 ICM delete/coil conversion, Vogtland coilovers

  15. #15
    Senior Member Three Rings GyzmoS4's Avatar
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    Feb 07 2006
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    Bronx, NY

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    I did piggies b4 chip, and i definitely felt a difference. Still don't have a cat-back yet, but i plan on getting electric cutouts first and eventually installing cat-back. Here's what it sounds like with chip and piggies: http://youtube.com/watch?v=aEJGs4-vQ_Q
    J-Fonz tuned Stg 2+
    "Two wrongs don't make a right, but it makes us even."

  16. #16
    Veteran Member Four Rings mrpeterparker's Avatar
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    Oct 17 2007
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    01 Silver B5S4
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    minneapolis, mn

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    nice thanks man...

  17. #17
    Veteran Member Four Rings
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    Dec 06 2007
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    Calgary, AB, Canada

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    You either need to get a chip with the rear O2's coded right out of the software, no longer in existence. OR if not, you need to trick the ECU into thinking that the rear O2's are reading correctly. This is done by using CELiminators which put the O2's sensor more out of the way of the exhaust stream so they pick up less exhaust and therefore have lower readings.

  18. #18
    Veteran Member Three Rings Rajan147's Avatar
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    Nov 23 2007
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    Columbus, OH

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    you can also wire in a rectifier diode and that should do the trick, cheap and easy solution
    B5 S4 AWE Stage 3 - sold

  19. #19
    Veteran Member Three Rings 2kblacks4's Avatar
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    Jan 04 2007
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    2000 black s4 6spd
    Location
    Birmingham Al

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    car only has a chip and piggies cats are still on. -sorry for the none edited version

    http://s149.photobucket.com/albums/s...iggievideo.flv
    4:11 posi track out back, 750 double pumper, edelbrock intakes, bored over 30, 11 to 1 pop up pistons, turbo jet 390 horse power, where talking some fucking muscle!!

  20. #20
    Veteran Member Four Rings BITRBO's Avatar
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    Mar 08 2007
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    Mr. Worl-Wye

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    I went chip, then catback although my intention was to do it in the opposite order. It felt a little bit better with the catback, but the sound benefits were DEFINITELY the highlight... But I could only take a week of that "sand-blaster" sound at WOT (on the 93 oct. program) until I had to install a catback.

    In hindsight, it would've been better performance-wise to do DP's/piggies first but I wanted to hear that exquisite exhaust note first
    '13 C63 AMG -
    '14 Tiguan - sold
    '09 JSW - sold
    '04 GTI - sold
    '01 S4 - sold

  21. #21
    Veteran Member Four Rings Aggv's Avatar
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    Sep 26 2006
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    Ohio

    Re: Piggie Pipes or Cat Back ... performance for the dollar?

    I bought a catback first because it was on sale, but i plan on doing dp's at the same time that i install the catback
    S4

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