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Okay bit of a weird query but bear with me..
I know a couple of you guys have used a 2.25" intercooler kit, obviously this comes with various, straights, bends etc.
I have a few straights left and thought about using one of them for a decat pipe, from those who have the kit do you think it would be thick enough for a decat pipe? Is it the right material to be welded in place of the cat?
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It is thick enough and will cope with the heat of HDi exhaust fumes but you cant weld ally to mild steel so youd have to clamp it.
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Cheers chris 
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Stick a load of real steel and gun gum to seal it haha proper bodge lol
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Lol, think i'll have to use the stainless pipe my bro gave me... 60mm 3mm thick stainless steel 
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Stainless steel win. I'm thinking about decating the xsi for lols
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Do it 
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Mines already stupidly loud though haha a Decat would just make it silly haha. Might get one just for the hindhead tunnel meet
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Has it got the standard HDI cat in it currently ? .. Just bash out all the internals ?
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Think i'm gunna cut it open and pull all the crap outta it like in dum dums guide tbh
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Lol I didn't even open mine up when i have my HDi Just stuck a steel rod through it until it was all the way though.
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Yeah, if you check dum dums guide though you'll see what gets left in there though! I want rid of all of it really
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The other thing is when you smash it you compress some of the cells togeher and could actually end up making it more restrictive. If you have a friend who can weld its just as free and just as easy to do it properly
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I've done a few with a big ass masonry drill bit. Drill a load of holes straight through it, then smash it all out. Whatever you don't get out will just burn off anyway...
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£105 for a Decat for my xsi :/
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Mate i seen a 6' decat go for £30 the other week! Is it the same thing or is the xsi one different ?
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Gti one would be better for me. They are the same shape and size etc, only difference is where is connects to the manifold is different. But changing my manifold to a gti one soon anyway
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Couldn't you just do what HDi guys do and just cut it open then weld it back up ?
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Do it properly and weld a pipe in. The cat itself is worth 30-70 quid.
The petrol ones can be worth considerably more if there genuine.
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Personally i wouldnt cut it out as with them talking about changing the MOT rules to mean you have to have the cat fitted youll be screwed if you have a straight pipe. at least if it looks like theres a box your covered at MOT time
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Cut it out and keep it in the garage, that way it can always go back in.
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