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Pre-muffler on an SC
I have a Fabspeed premuffler which I haven't installed yet. I'm trying to decide if I should use it or not. I live in a county which doesnt do emmissions testing, just a visual. But I'm a little worried they might see the premuffler and realize it's not a cat. Also, will the exhaust smell worse without the cat?
I've seen posts that recommend doing this on 3.2 cars with a chip. But I'm not sure there is much benefit on a SC. So should I use it or sell it?
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Matt. 83 911SC 85.5 944 NA - Sold |
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11-22-2009, 04:50 AM
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Matt,
I don't think your exaust will smell any different,although if you have a chip installed you might as well use your premuffler to extract the full benefits.As for the emissions testing,just go with the stock cat and you'll be good to go ... I have a MK premuffler and a Fabspeed two out muffler on my car and i would never go back to original,just sounds too good  Phil
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Cheers Phil 89 Coupe,Black,95 3.6 engine and the list goes on ... 1983 944 SP2 race car PCA #96 |
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11-22-2009, 05:17 AM
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Location: Michigan
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Slap it on there.
The exhaust will not smell any different but the sound will change, for the better. You could always install the cat when inspection times comes around.
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1981 911SC ROW SOLD - JULY 2015 Pacific Blue Wayne |
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11-22-2009, 05:41 AM
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Quote:
As far as sound goes, I have a GHL 1 in 1 out and am very satisfied in that regard. I don't want to have to swap out the cat every year, especially if it's just being done for sound. Is there any performance benefits to using the premuffler on an sc?
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Matt. 83 911SC 85.5 944 NA - Sold |
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11-22-2009, 06:47 AM
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Location: Docking Bay 94
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I have a Fabspeed Premuffler an my SC, the nice thing about it is that it lowers temperatures on that side of the engine with a *small* increase in power.
Those who have the MK premuffler: does it have some sort of batting or insulation on the inside of it wrapped around the perforated pipe?
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Kurt |
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11-22-2009, 07:00 AM
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Even with the factory cat, these systems were very well designed to get the most power out of the engine. You will notice the sound is a little louder but I doubt you'll feel any increase in power you might gain.
I think my system is pretty close to what you can expect. YouTube - 911 SC Flo-Pro muffler single in/out
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1981 911SC ROW SOLD - JULY 2015 Pacific Blue Wayne |
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11-22-2009, 07:43 AM
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Just got and installed my MK pre-muffler. Excellent quality and great fit. Yes it does have what looks to be fiberglass around the perforated pipe. Haven't run it yet as I am awaiting a new oxygen sensor...the old one on the cat seems to be "welded" and just won't budge and of course it is now rounded off. Can't wait
Bob |
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11-22-2009, 07:56 AM
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1983 Porsche 911SC
1982 Porsche 911SC
