LloydMB Posted March 3, 2014 Share Posted March 3, 2014 As most of you may know, the cat on the mb3 is in the manifold, I'm just wondering what people are doing exhaust system wise, de cats ect and what the best route would be. Does the full exhaust system from a mb6 go straight on, or with a little playing around? Thanks Quote Link to comment Share on other sites More sharing options...
Mr Brown Posted March 3, 2014 Share Posted March 3, 2014 you will need one of the others to confirm but i believe the D16 manifold fits our D15 engine and that has a separate cat. Best route seems to be to go to one of those custom exhaust places and have it made to your spec as the price is not much different to a branded ready made system... Quote Link to comment Share on other sites More sharing options...
LloydMB Posted March 3, 2014 Author Share Posted March 3, 2014 Oh right, so the the non cat manifold is the same length as the mani with the cat?Do you have any idea what sort of price that would be and what size back box would be best? Thanks Quote Link to comment Share on other sites More sharing options...
spudley1988 Posted March 3, 2014 Share Posted March 3, 2014 When I had my mb3 I bought a aftermarket manifold which obv gives the decat. However I did have a cat from my old ej9. So when I went to the guy who custom makes my exhausts I got him to fabricate my exhaust so I could put my ej9 cat into the centre when required. This is what I'd do again if I had a mb3 saved p**sing about replacing whole manifold again for mot. Quote Link to comment Share on other sites More sharing options...
yellowUmberella Posted March 3, 2014 Share Posted March 3, 2014 When I had my mb3 I bought a aftermarket manifold which obv gives the decat. However I did have a cat from my old ej9. So when I went to the guy who custom makes my exhausts I got him to fabricate my exhaust so I could put my ej9 cat into the centre when required. This is what I'd do again if I had a mb3 saved p**sing about replacing whole manifold again for mot.That's a great idea, maybe look at an OE Cat or a sport cat. Then again the exhaust place should be able to point you in the direction? Quote Link to comment Share on other sites More sharing options...
spudley1988 Posted March 3, 2014 Share Posted March 3, 2014 You can get a cat off an ej9 all over Honda for sale. Would depend if you wanted standard or not. I've got a ej9 one kicking about somewhere poss in my boot lol. Is def recomend the set up tho but obv your car bud. Quote Link to comment Share on other sites More sharing options...
spudley1988 Posted March 3, 2014 Share Posted March 3, 2014 * Honda parts for sale on facebook Quote Link to comment Share on other sites More sharing options...
LloydMB Posted March 3, 2014 Author Share Posted March 3, 2014 Well I roughly know what i want for my car, but saying that I'm new to this, so all advice is more than welcome and appreciated thanks.Is the ej9 cat in the exhaust system though, I would need a new exhaust first if so. Quote Link to comment Share on other sites More sharing options...
gt4steveo Posted March 3, 2014 Share Posted March 3, 2014 I have got a d16 stainless manifold on my mb3 acting as a decat, as for the rest of the exhaust I sourced an mb6 performance system and used a reducer pipe at the manifold down pipe end.You'll need to do a little welding but most garages will do it for about 50 quidHope this helps Quote Link to comment Share on other sites More sharing options...
spudley1988 Posted March 3, 2014 Share Posted March 3, 2014 You would need the rest of the system or u cud still fabricate the cat in with whatever system is on. Theirs no stopping you getting the manifold just now. Only need to worry about cat if mot is near lol Quote Link to comment Share on other sites More sharing options...
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