decat

1. 355858 Frequent Poster Joined: Jun 2006 Norwich Posts: 730 Saxo VTR Mk2 Wicked Red - Suzuki jimny soft top

   #1 2nd April 2007, 18:36

   does anyone know if a decat pipe will fit onto a standard exhaust or if it will only go onto aftermarket also does it need to be welded on? cos i wanna be able to swap it over for MOT? is it easy to put on and take off?
   
   Sorry bout all the questions
2. Japman Saxperience Addict Joined: May 2006 Costa del Wales Posts: 12393 Spam Wagon

   #2 2nd April 2007, 18:39

   It should fit on mate,but id wait until after the mot if its soon
3. 355858 Frequent Poster Joined: Jun 2006 Norwich Posts: 730 Saxo VTR Mk2 Wicked Red - Suzuki jimny soft top

   #3 2nd April 2007, 18:40

   its 11 months off
4. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #4 2nd April 2007, 18:42

   Don't de-cat your standard exhaust. You're best purchasing a new system, with a decat pipe, and when MOT time comes, get the old exhaust system back on. It's not a big job that way.
5. S34MER East Midlands Joined: Jun 2006 Derby Posts: 8305 Skoda Fabia VRS

   #5 2nd April 2007, 18:47

   its a piss easy job to swap the cat over come MOT time anyway, 10-15min job!
6. bear_westy Frequent Poster Joined: Jul 2005 co durham United Kingdom (England) Posts: 892 1995 Toyota MR2 GT

   #6 2nd April 2007, 18:51

   toad dunno what youre on like, glue? swapping a whole system takes way longer than a de-cat pipe.... it is only 2 bolts to the manifold and an exhaust clamp to the centre section undo them then hit it with a rubber mallet a couple of times and put the cat back on exactly the same way but in reverse.
7. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #7 2nd April 2007, 19:00

   LOL. I meant in reference to putting a de-cat on the standard exhaust. I wasn't trying to compare the difference between swapping the de-cat pipe out Vs putting in another system. At the end of the day, it's a bit pointless removing the cat from the standard system. There's a lot of restriction there, best get a decent system IMO.
8. 355858 Frequent Poster Joined: Jun 2006 Norwich Posts: 730 Saxo VTR Mk2 Wicked Red - Suzuki jimny soft top

   #8 2nd April 2007, 19:01

   can u get a decent counding and good performing cat back system? atleast that way it will save me the bother of the changing it all about?
9. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #9 2nd April 2007, 19:24

   Well, yes, as most of the systems are 'cat back' systems. The cat bypass pipe is an addition if you know what i mean.
10. 355858 Frequent Poster Joined: Jun 2006 Norwich Posts: 730 Saxo VTR Mk2 Wicked Red - Suzuki jimny soft top

    #10 2nd April 2007, 22:33

    oh ok so i could get one then take the cat out if i wanted to?
11. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #11 2nd April 2007, 22:54

    If you like... But if you are looking for out and out performance, you'll need the cat removed, and a proper cat bypass pipe. The standard downpipe that has the cat on it, is shocking. Then again, are you running a VTR? It's probably not worth thinking so much in terms of power in that case, I would just go with the cat back system. I will sound nice and look good, but don't expect any real gains in power.
12. S34MER East Midlands Joined: Jun 2006 Derby Posts: 8305 Skoda Fabia VRS

    #12 2nd April 2007, 22:56

    Quote:

    Originally Posted by 355858 oh ok so i could get one then take the cat out if i wanted to?

    yup sure could!
13. S34MER East Midlands Joined: Jun 2006 Derby Posts: 8305 Skoda Fabia VRS

    #13 2nd April 2007, 22:59

    Quote:

    Originally Posted by Toad If you like... But if you are looking for out and out performance, you'll need the cat removed, and a proper cat bypass pipe. The standard downpipe that has the cat on it, is shocking. Then again, are you running a VTR? It's probably not worth thinking so much in terms of power in that case, I would just go with the cat back system. I will sound nice and look good, but don't expect any real gains in power.

    
    
    he'll still see an increase in performance as the fuems will exit quicker, and a decat pipe will make it alot more responsive!
14. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #14 2nd April 2007, 23:08

    Sort of, but there's other factors to consider. Tuning cars is never straight forward, you can't just somtimes make one mod, and expect to see great things. The exhaust works well if there's potential to NEED to get the exhaust gases out quicker. I.e., you will need to think about getting more air in also. So there's induction to consider, and also the exhaust manifold, which is almost like a cork between the two. I didn't say that he wouldn't gain power, I said not to expect much.
15. S34MER East Midlands Joined: Jun 2006 Derby Posts: 8305 Skoda Fabia VRS

    #15 2nd April 2007, 23:11

    yeah i quite agree, but you've got to start somewhere!
16. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

    #16 3rd April 2007, 07:57

    Agreed.