If i take off the cat...

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If i take off the cat... - 2/21/2005 1:27:10 PM    Hornyturbo   Posts: 6 Joined: 2/19/2005 Status: offline Will the check engine light come on? Post #: 1

RE: If i take off the cat... - 2/22/2005 8:58:50 AM    audihere Posts: 809 Joined: 8/9/2004 Status: offline pretty sure it will and youll lose a noticable lowend power from what ive read of other peoples experience. although you will gain top end. so it depends on what you use your car for. as for the cel light its most likely to happen unless i believe if u shim up your rear o2 sensor so its out of the way of the direct flow of the exhaust gas u should be all right. (in reply to Hornyturbo) Post #: 2

RE: If i take off the cat... - 3/4/2005 11:45:56 PM    audiboy1618   Posts: 4151 Joined: 6/25/2004 Status: offline No your undoubtably get one, belive me. Just stick a black insert behind the cel. You wont even know its there, then just scan once a week. (in reply to audihere) Post #: 3

RE: If i take off the cat... - 3/6/2005 1:37:12 PM    audihere Posts: 809 Joined: 8/9/2004 Status: offline well i thought if u shimmed up the o2 sensor out of the way of the exhaust flow that it wouldnt set the cel light. also if u really understand electronics you can put like a resistor or some kinda electrical gismo into the path of the o2 that will trick the ecu into thinkin it is getting normal readings from the o2. this is called a o2 spoof. alot of other car companies make them when deleting a cat. _____________________________ (in reply to audiboy1618) Post #: 4

RE: If i take off the cat... - 3/19/2005 7:32:01 PM    TomRitt   Posts: 1984 Joined: 11/12/2004 From: Perkasie, PA / Potsdam, NY Status: offline I've heard this as well and will post next week when I try it _____________________________ Contact Me with your 034efi EMS or Scat Rods needs (in reply to audihere) Post #: 5

RE: If i take off the cat... - 3/25/2005 8:10:50 PM    macky2114   Posts: 126 Joined: 2/18/2005 Status: offline my friend shimmed his o2 on a is300 and it didn't set the cel so i don't c y it would do if for audi then again germans man thought of everything lol _____________________________ 1997 Audi a4 2.8 Quattro Color: ORANGE Location: NJ (in reply to TomRitt) Post #: 6

RE: If i take off the cat... - 4/30/2005 11:21:10 AM    trailboss   Posts: 1276 Joined: 6/26/2004 Status: offline when i installed mine i got a cel. I installed the spark plug non fowlers and it went away. Check out this post, test pipe info (in reply to macky2114) Post #: 7

RE: If i take off the cat... - 5/2/2005 5:28:29 PM    soupie69uk   Posts: 70 Joined: 4/7/2005 Status: offline I have a supersprint de-cat pipe and my car cel light has not come on. However my A4 doesnt have a lamda sensor after the cat just before. Cheers _____________________________ (in reply to trailboss) Post #: 8

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