ploglet

I have an 87' Carrera that I am thinking of putting a new exhaust system on. I am wondering if other Porsche owners have any input on which exhaust system is recommended. I don't mind the noise so much, as long as I don't have issues with the inspection people I guess. I will need to retain the heater boxes. All input is valuable.

kahuna

If emissions inspections are not a concern then ssi or B&B have a good rep for headers. Muffler recomendatiomns are as varied as the people on the board.
If visual emissions are the concern then geta eurp premuffler to replace the cat. You may even pass a sniffer test with this.

If only a cat back muffler then as with the headre muffler you will find as many opinions as respondants.

ploglet

Will I run into any problems having a SSI system and then passing the emissions inspections? I wouldnt think this has anything to do with the emissions.

Juan Lopez

You could/will miss emnissions test if they do the visual test. They'll be looking for something that resembles a cat converter.

Another thought, I wouldn't change muffler without changing headers. You could get stuck with a one inlet muffler if you want then to change to headers.

Mot options are expensive, SSI's are great as well as B&B's. I personally have SSI's into a B&B muffler.

Bill Gregory

Although SSI's work very well on the 3.0L and earlier engines, they are a bit on the small side for the 3.2L and larger engines. You can use them, but you won't get the full benefit you'd get with different sized pipes. Use of SSI's means you don't have a catalytic converter, which is what can affect emissions.

As pointed out, mufflers abound. If you have the bucks, stainless steel is the way to go.

Chris Martin

The SSI system does away with the cat. So if the emisisons folks are sharp, and you have a visual inspection you will fail. GHL has a system now that's similar but with 2 cats, sort of like a 993 system, but it fits our cars. Very expensive though. If all you want is a little better sound, then a muffler will do the trick. I like the bursh on my SC, although there is a little drone at ~3k rpm. Other than that a cat bypass or the Euro pre-muffler can be added for a little more power and a differnt exhaust note.

richards_04

How are the Ruf and Techart exhaust systems?

ploglet

I am not looking to just get a new muffler. I was looking to do the whole exhaust, headers and everything. I was planning on doing the SSI as I thought it would last a lot longer. But from waht Bill has to say I may have to re-think it. I dont mind paying the cost if the product is going to last. I am not so much worried about the sound either. I would like to get the most HP out of the new addition but need to pass the emissions test. From the sounds of it, the GHL may be the way to go. Does this sound right?

Chris Martin

If you are up for the cost many have said nice things about the GHL system. Pelican has a pretty good summary of the system.

<a href="http://www.pelicanparts.com/catalog/shopcart/MISC/POR_MISC_ssmuff_main.htm" target="_blank">http://www.pelicanparts.com/catalog/shopcart/MISC/POR_MISC_ssmuff_main.htm</a>

GB83SC

I am waiting for UPS with my new single in dual out GHL, after alot of research the warranty is the best around and they honor it with no questions. I talked with the company and they went as far as, try the muffler on the car for a couple of weeks and if you dont like the sound to (quiet or loud)sent it back and we will modify it at no cost. I am replacing the OEM muffler but keeping the ct bypass on.
will post results.
GB83SC

Ed Bighi

Here is the short list of exhausts I have tried in my car. Stock manifolds with cat and stock muffler, stock manifolds with cat and borla 1 in 1 out, stock manifolds with cat bypass pipe and borla 1 in 1 out, stock manifolds with cat bypass pipe and b&b 1 in 2 out, stock manifolds with cat bypass pipe and monty 1 in 1 4" outlet out (this one sounded really good and ran really good), ssi's with bursch standard 2 in 1 out (too much of a high pitched, small displacement sound), ssi's with b&b 2 in 2 out (muffler had to be fixed a couple of times), ssi's with 2 in 1 out glass pack system from bursch (too much of a high pitched, small displacement sound), ssi's with sport muffler with 2 outlets, ssi's with no muffler and just megaphones, back to stock manifolds with cat bypass pipe and a completely gutted factory 1 in 1 out. This last one does not sound loud at all when idling, but really loud but incredible at high rpm, runs really good, weighs less than a phone book, cheap and has no internal parts to crack or break. I didn't care about all the money spent since I had to see things for myself. I'll be keeping the last one. <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

Swank911

Does GHL make a muffler for the early 911.

I have a 1973 E i am putting 1980 3.0L in with SSIs.

Should I look for a muffler for the year of my car, or year or my engine?

Wil Ferch

Hi:
I'm late in this thread, but I agree with Ed Bighi. If you look hard at all the published data, you can get "close" to the performace of the SSI's , by using the stock header/heater boxes, a Euro pre-muffler ( Porsche part...NOT a cat by-pass !), leading to a single-in, dual-out modified stock muffler. This is essentially what RUF did at one time, and should gain about 13 hp at peak rpm's...close to SSI improvement but SSI will get this peak improvement at a broader rpm range near the top. All told, a nice compromise if you you have a "visual" inspection( pre-muffler looks a lot like a cat), or even the ease with which the pre-muffler and cat can be swapped, if a true cat is necessary for inspection.
--Wil Ferch

Ed Bighi

I go through emissions every year in Arizona. After a few years, I started to get tired of changing the cat-bypass back and forth with the cat for emissions. So a couple of years back I said screw it and went to an emissions testing facility in the poorest part of Phoenix to get tested. I went in with the cat-bypass to see if it would pass the visual. The CO/HC is a joke to pass in an sc. So I leaned the fuel distributor to a point where the rpms dropped a tad and the engine ran a little rough and went in. It passed the visual and CO/HC without a hitch. When I still had the heat exchanger boxes around the stock headers, I would sometimes say the car had 2 cats right there, pointing to the exchangers. Worked like a charm. Last year, the guy called his supervisor over since the car was giving out ridiculously low numbers. He just could not believe how low the readings were. Fabiani makes a pre-muffler that looks almost like a cat and should make visuals easy to pass.

Want to be

ploglet,

Bursch exhaust is the way to go!

You really already have headers on your 911 now.

The sound is good on the Bursch and its cheap.

GPR web site: <a href="http://www.gprparts.com" target="_blank">www.gprparts.com</a>

Good luck

jpc
<img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />