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  #1  
Old 09-04-2009, 08:35 PM
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Default Resonator delete question

On the JCW exhaust there is the resonator which muffles the exhaust sound. If you remove the resonator and put a straight pipe on like the one I pasted below, would that effect the smog test?

http://www.minspeed.net/MJCWF.htm
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Thanks!
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Old 09-04-2009, 09:40 PM
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I doubt it would effect smog testing, its not emission equipment, its sound control.

I would leave it alone, the car sounds too raspy without a resonator.
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Old 09-04-2009, 09:45 PM
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agreed, unless you get better cans in the back, it will sound raspy. I have yet to hear an aftermarket exhaust sans resonator that is not raspy...although, I am still waiting to hear the new NM Engineering exhaust for the clubman, it does not have a resonator.

I pulled the resonator out of my Outback XT to make the exhaust louder....all that did was make noise, rasp, and droning over 55mph. I had it put back in, welded.
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Old 09-04-2009, 09:50 PM
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Turbo cars don't usually have too much of a rasp problem. But with cars like the R53 that are supercharged, the exhaust has to be treated as if the car was normally aspirated.
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Old 09-04-2009, 09:51 PM
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I had a ton of rasp on the outback XT, it was a turbo.
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Old 09-04-2009, 09:59 PM
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Quote:
Originally Posted by 03Indigo View Post
I had a ton of rasp on the outback XT, it was a turbo.
Was it rasp or just more turbo noise? Subarus usually sound pretty good with straight pipe.
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Old 09-04-2009, 10:04 PM
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honestly, I have no idea, but it sucked. They just did not make an aftermarket pipe when I had the car, now there are options, which sound good, although, not sure if they have resonators or not. I just pulled mine out of the stock pipe, was only like that for a week, I hated it so much.
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Old 09-04-2009, 10:05 PM
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Well the thing is I've already had this part installed for 2 years now.. lol

I just started thinking about the smog.. and was like oh crap - will it effect the smog test.

The exhaust sounds nice.. well to my taste anyways. They've made the pipe really well, it's not ricey like an annoying exhaust. I have a JCW exhaust - purchased from the dealer after I bought my mini and had them install it. The resonator was not welded on it was in fact clamped on, easy install. If you order the jcw exhaust system when you order you're mini then it's welded but after market purchase from the dealer it has a clamp.

So this mod isn't going to effect my smog. I know it's an audio change but I wanted to make sure it was all clear.

I still have the original resonator pipe, I'd hate to switch it out for a test then switch it back.. pain in the arse. I would believe the parts that myminspeed sells are tested and work with smog.
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  #9  
Old 09-04-2009, 10:36 PM
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I'd guess no, they don't test it to be smog legal in all states, especially Cali. i don't see why it wouldn't pass though.
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Old 09-04-2009, 11:08 PM
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Good point there Glen. I forgot about the C.A.R.B regulated parts especially for here in Cali. Yeah it's clearly an acoustic change and everywhere else I looked even on NAMM people have stated it should be fine but there are a few people who were saying it "might". Hence I asked the experts like you guys
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