exhaust system
12-01-2004, 10:04 PM
#16
Rennlist Member
Join Date: Nov 2004
Posts: 422
Likes: 0
Received 0 Likes
on
0 Posts
On my catless 1980 Euro S I use a daul inlet/outlet Magnaflow muffler, it has a flow path like the Ott X pipe. I used 2.25 inch pipe from the manifolds to the muffler and then to the left corner position for the system exit. The muffler is mounted in the position the front myffler was origionally located. It is not bad for noise at idle bet turns into a deep raspy shriek at high rpms. With the free flowing exhaust I have to be careful about hitting the redline it revs so quickly
1980 EuroS Red/Blk
1980 EuroS Red/Blk
12-01-2004, 10:45 PM
#17
Drifting
Join Date: Jul 2002
Location: Los Angeles, CA
Posts: 3,348
Likes: 0
Received 0 Likes
on
0 Posts
12-01-2004, 11:44 PM
#20
Drifting
Join Date: Jul 2002
Location: Los Angeles, CA
Posts: 3,348
Likes: 0
Received 0 Likes
on
0 Posts
It kind of depends what kind of sound you want...
The flowmaster gives you more of a musclecar sound.
If you want a more sophisticatred sound, something quieter may be in order.
I found that the flowmaster by itself was too loud, and too raspy.
But with the monza tip, it sounds great to me.
But if it was still too loud for you, you could still add an additional small glasspack resonator somewhere in line...
Flowmaster makes a couple models, with different sound levels.
If you don't want a musclecar sound, maybe you could try their quieter muffler...
The flowmaster gives you more of a musclecar sound.
If you want a more sophisticatred sound, something quieter may be in order.
I found that the flowmaster by itself was too loud, and too raspy.
But with the monza tip, it sounds great to me.
But if it was still too loud for you, you could still add an additional small glasspack resonator somewhere in line...
Flowmaster makes a couple models, with different sound levels.
If you don't want a musclecar sound, maybe you could try their quieter muffler...
12-02-2004, 03:55 PM
#22
Racer
Thread Starter
Join Date: Aug 2004
Location: manitoba, canada
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
does the monza tip baffle the sound quite a bit and does it alter the tone very much? I was thinking of doing a borla/ monza tip setup or a flowmaster 50 series/monza tip. What type on borla muffler is good to use??
12-02-2004, 05:28 PM
#23
Drifting
Join Date: Jul 2002
Location: Los Angeles, CA
Posts: 3,348
Likes: 0
Received 0 Likes
on
0 Posts
I found that the monza tip tends to eliminate the "raspiness". It lessens the harsh tones...
The flowmaster naturally has a lot of low end rumble. So at idle, a lot of mufflers like
the Borla, flowmaster, even glasspacks, all sound pretty cool at idle on the 928.
But what I notice with a lot of systems, is that when you really get into the
throttle, it goes past the rumble, into the ROAR stage.
When the exhaust is roaring, a Flowmaster without a monza tip
to me, sounds a bit raspy. Like someone with a sore throat.
It's hard to explain. I think maybe it is some kind of resonance
from the exhaust exiting the tailpipe? Anyhow, once I added
the monza tip, it made the roar more muffled, and less raspy.
It gave it a more "hollow" sound. Probably the kind of
"Lambo" sound you were looking for. It sounds kind
of exotic at higher rpm, but has the muscle car rumble at idle.
Without the tip, it will sound like a musclecar at idle, and
then like a roaring monster at high rpm. I think the baffled
tip added a nice tone to the exhaust. I'd mount up a
flowmaster 50 series, or a borla, and then run the car
for a while. See how you like it. If it sounds great,
leave the tip off. If it sounds too loud, try adding the tip...
The flowmaster naturally has a lot of low end rumble. So at idle, a lot of mufflers like
the Borla, flowmaster, even glasspacks, all sound pretty cool at idle on the 928.
But what I notice with a lot of systems, is that when you really get into the
throttle, it goes past the rumble, into the ROAR stage.
When the exhaust is roaring, a Flowmaster without a monza tip
to me, sounds a bit raspy. Like someone with a sore throat.
It's hard to explain. I think maybe it is some kind of resonance
from the exhaust exiting the tailpipe? Anyhow, once I added
the monza tip, it made the roar more muffled, and less raspy.
It gave it a more "hollow" sound. Probably the kind of
"Lambo" sound you were looking for. It sounds kind
of exotic at higher rpm, but has the muscle car rumble at idle.
Without the tip, it will sound like a musclecar at idle, and
then like a roaring monster at high rpm. I think the baffled
tip added a nice tone to the exhaust. I'd mount up a
flowmaster 50 series, or a borla, and then run the car
for a while. See how you like it. If it sounds great,
leave the tip off. If it sounds too loud, try adding the tip...
12-03-2004, 05:40 AM
#25
Race Director
I have a stock exhaust (with cats) and a RMB....it sounds GREAT...much better than a stock S4...but if you can pull the cats.....hmmm...get headers (Devek level II) then an Ott X pipe...Cat bypass pipe....mated to a Borla Cat back or Devek exhaust....that would give you lots more power and great sound (maybe too loud for some)
12-03-2004, 02:19 PM
#26
Addict
Rennlist Member
Rennlist Member
Join Date: Feb 2004
Location: Monterey Peninsula, CA
Posts: 2,374
Likes: 0
Received 16 Likes
on
12 Posts
exhaust... hmmmmm....
Also, I was watching a car show the other day. I saw the ferrari enzo. That car sounded pretty sweet. What type of system setup would give more of a sound like a lambo or ferrari. Just currious. - Fan4life
Why not keep the cats for resonance and save some air while you're at it. Cats will help to muffle the sound a bit..
Borla is prepackaged, it's a good system if you can get one.. 928's have a "bent crank" V8, and will sound like one unless you get an X-Pipe. Depending on your musical tastes, you might want to listen to a car that has an X-Pipe, or go to a NASCAR Race.... Then decide...
If you want only sound, too many combo's to list as a matter of taste..
If you want power, then it gets easier... Headers, X-Pipe, high flow Cats, and high flow mufflers.. 3 inch dual stainless helps too... (Ask me how I know) The aforementioned will be overkill for a street car with no other mods, as you will not be flowing enough air through the entire motor to take advantage of this thorough of a setup....
Good Luck
,
12-03-2004, 02:22 PM
#27
Drifting
Join Date: Jul 2002
Location: Los Angeles, CA
Posts: 3,348
Likes: 0
Received 0 Likes
on
0 Posts
The s4's, and the s4 exhaust systems, sound different from an early 928.
I agree that the stock s4, with cats, and an RMB, sounds *great*.
But the old 928s do not have the same dual exhaust, or the same cats, or the same resonators...
So yanking out the rear muffler will not always sound the same.
But then again, he could unbolt his old rear muffler, run the car, and see how it sounds...
But if his plan is to get rid of the cats, and open up the exhaust,
he's going to be starting from scratch.
Just the fact that he will remove the cats, and I still have mine,
makes it a different animal. It may need more mufflers to keep
the sound reasonable... The nice thing is that it is always
pretty easy to add a 1 or 2 foot glasspack inline somewhere.
I heard one s4 with an open dual exhaust all the way to the back,
and then had two small glasspacks. It sounded great. But when
we tried the same setup on my car, it was way too loud. Same
exact exhaust system...
I agree that the stock s4, with cats, and an RMB, sounds *great*.
But the old 928s do not have the same dual exhaust, or the same cats, or the same resonators...
So yanking out the rear muffler will not always sound the same.
But then again, he could unbolt his old rear muffler, run the car, and see how it sounds...
But if his plan is to get rid of the cats, and open up the exhaust,
he's going to be starting from scratch.
Just the fact that he will remove the cats, and I still have mine,
makes it a different animal. It may need more mufflers to keep
the sound reasonable... The nice thing is that it is always
pretty easy to add a 1 or 2 foot glasspack inline somewhere.
I heard one s4 with an open dual exhaust all the way to the back,
and then had two small glasspacks. It sounded great. But when
we tried the same setup on my car, it was way too loud. Same
exact exhaust system...
12-03-2004, 03:00 PM
#28
Racer
Thread Starter
Join Date: Aug 2004
Location: manitoba, canada
Posts: 489
Likes: 0
Received 0 Likes
on
0 Posts
Richard - what do you mean by a "bent crank" V8 sound? I think I will be looking more for a sound than performance since there isn't really to many mods for my year of 928 that will increasse performance that much that I will have to have a racing style exhaust system.
bcdavis - Right now my car has a muffler where the cats are, don't know what type, and the intermediaate muffler and a glasspack on the end. The intermediate muffler has to go because it has a hole in it. I was thinking of removing the intermediate muffler and just put either a glass pack or a piece of pipe. Then I was going to remove the glasspack at the end of the exhaust system and put the monza tip. I think I will remove that muffler as well near the front if it is just a crappy generic muffler. I will try a flowmaster or borla. Is it ok to mount a muffler where the cat was or is it to close to the engine??
bcdavis - Right now my car has a muffler where the cats are, don't know what type, and the intermediaate muffler and a glasspack on the end. The intermediate muffler has to go because it has a hole in it. I was thinking of removing the intermediate muffler and just put either a glass pack or a piece of pipe. Then I was going to remove the glasspack at the end of the exhaust system and put the monza tip. I think I will remove that muffler as well near the front if it is just a crappy generic muffler. I will try a flowmaster or borla. Is it ok to mount a muffler where the cat was or is it to close to the engine??
12-03-2004, 03:13 PM
#29
Nordschleife Master
Almost forgot - my 40 series runs 3" in and Out. And it is a Euro so I had no choice but to cut and weld the new system in.
IMHO - SOUNDS BRUTAL under acceleration. LOVE IT!
Good Luck and if anyone needs one - I have a muffler with the resonator (pipes) still attached. (From my 84 Euro) PM me if your interested and we'll talk $$$$. Free (Minus shipping) if your single, female and good looking! LOL
Thanks
IMHO - SOUNDS BRUTAL under acceleration. LOVE IT!
Good Luck and if anyone needs one - I have a muffler with the resonator (pipes) still attached. (From my 84 Euro) PM me if your interested and we'll talk $$$$. Free (Minus shipping) if your single, female and good looking! LOL
Thanks
12-03-2004, 03:18 PM
#30
Addict
Rennlist Member
Rennlist Member
Join Date: Feb 2004
Location: Monterey Peninsula, CA
Posts: 2,374
Likes: 0
Received 16 Likes
on
12 Posts
Fan,
Listen to any old V8 muscle car, or your 928... It sounds like thumps, thumpa, thumpa, with an off beat syncopated sound on full song. If you listen to a motorcycle, it sounds like a raspy wail... The X-Pipe changes the thumpa, thump to the raspy wail due to the gas flow and sound cancelling nature of the design...
I think Tom Cloutier's site has a sound clip of both.
www.powerbroker.net
maybe Dr. Gas also has some clips...
Cheers,
Listen to any old V8 muscle car, or your 928... It sounds like thumps, thumpa, thumpa, with an off beat syncopated sound on full song. If you listen to a motorcycle, it sounds like a raspy wail... The X-Pipe changes the thumpa, thump to the raspy wail due to the gas flow and sound cancelling nature of the design...
I think Tom Cloutier's site has a sound clip of both.
www.powerbroker.net
maybe Dr. Gas also has some clips...
Cheers,