Simon, I am fairly sure that ProMAX's decat comes with a silencer as part of it
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| Author: | HUBBA.HUBBA [ Sun Feb 22, 2015 9:48 pm ] |
| Post subject: | advice on a decat exhaust needed |
Looking to change my exhaust for a Dansk, but also fancy getting rid of the cat. Does anyone know of a complete bolt on system ( cat onwards) they can recommend. I presume I would have to hack off the existing cat. Or would it be a case of having to buy a proMAX decat and a Dansk rear. Cheers |
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| Author: | HUBBA.HUBBA [ Mon Feb 23, 2015 7:54 am ] |
| Post subject: | Re: advice on a decat exhaust needed |
Or can I just use a non cat exhaust |
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| Author: | 944 Man [ Mon Feb 23, 2015 6:48 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Better to include a resonator. |
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| Author: | HUBBA.HUBBA [ Mon Feb 23, 2015 7:11 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
944 Man wrote: Better to include a resonator. Resonator? Would that go inplace of the cat? Is that what the proMAX decat kit is? |
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| Author: | 944 Man [ Mon Feb 23, 2015 8:22 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
As far as Im aware its just a piece of pipe. A resonator is an intermediate silencer. Lose the cat/resonator and itll sound nice, but it probably wont go as well. Theres a fellow on one of the FB groups now experiencing this very same phenomenon. |
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| Author: | HUBBA.HUBBA [ Tue Feb 24, 2015 4:33 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Well ive just got an email from proMAX saying their decat pipe is in effect a silencer. But only for coupes not cabriolets (which is a pain)! |
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| Author: | HUBBA.HUBBA [ Tue Feb 24, 2015 4:41 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Am i right in thinking '89 s2's didn't have a cat and if so does anyone know if a there is a pre '90 non cat dansk system with a silencer instead? |
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| Author: | Balders [ Tue Feb 24, 2015 8:36 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Hi when I had my 1992 S2 I had a Dansk back box fitted to the standard exhaust, I then cut out the Cat and replaced it with a piece of pipe (no resonator). I didn't notice any real difference , maybe a little more noise, which may have made it feel a little quicker but nothing really. On my 968 I've run a full janspeed decat system (no silencer or resonator in place of the Cat) it sounds great but resonates, more noticeably on motorways. I have replaced the de cat pipe with the standard cat and noticed more torque, but I'm thinking of modifying the de cat pipe to add either a resonator or a sports cat to hopefully retain the torque and regain the noise. Hope my ramblings are of help Regards Balders |
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| Author: | AlpineTurbo [ Tue Feb 24, 2015 9:41 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Simon, I am fairly sure that ProMAX's decat comes with a silencer as part of it .
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| Author: | Tabman [ Tue Feb 24, 2015 11:31 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Years ago I bought a decat kit and Dansk rear box off Promax for my Cab , and yes it has a small resonator box / silencer where the cat was.Seem to recall that the decat resonator was made by janspeed.Not sure of the significant difference between a coupe and a cab exhaust , because altho the cab has effectively a double skinned floorpan , I thought the exhaust was well clear of it. Toby |
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| Author: | 944 Man [ Wed Feb 25, 2015 11:02 am ] |
| Post subject: | Re: advice on a decat exhaust needed |
That's much better then Chas. Id definitely opt for this first silencer/resonator rather than a piece of pipe. |
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| Author: | HUBBA.HUBBA [ Wed Feb 25, 2015 3:02 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Are the cats normally bolted to the down pipe or is it welded cause this is what mine looks like. Does it look normal? Attachment: 20150225_145617.jpg Attachment: 20150225_145600.jpg
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| Author: | HUBBA.HUBBA [ Wed Feb 25, 2015 3:48 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
Just got off the phone to proMAX and there is an issue with clearance on a cabrio floor plan. Can knock on a certain point. So the stainless decat would need modifying. Not sure I fancy that. |
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| Author: | KennyP [ Wed Feb 25, 2015 5:52 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
I have a coupe ('89), but went through the various options last summer as I blew the baffles in the centre resonator on a wee trip to Braemar...ahem. It really made a hell of a noise and made the car unpleasant to drive. The exhaust that remained was ok ish, but In the end I had a stainless system made from bottom of d/pipes to the tail and its worked out just fine for me. I had RJM in Glenrothes sort it all out and it fits perfectly with a nice gentle tone at cruising and some smooth sonics once I give it some. They did a centre silencer/resonator and a big rearbox with my choice of tailpipe all custom built up and fitted for mid £500's which I was quite happy with. There are pics of it if you look back around september ish last year. KennyP |
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| Author: | deLUX [ Wed Feb 25, 2015 6:18 pm ] |
| Post subject: | Re: advice on a decat exhaust needed |
I bought a Dansk back box and took the front section to my local exhaust guy - who immediately said "that's from a 944" so in knew I was in good hands - I asked him if I could put a straight through pipe in place of the front silencer and he said no problems. £30 later and I was a happy camper. Sounds fab. |
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