Twin pipe Sport muffler vs. Megaphones

[Vipergrün]

Which will be louder assuming the Megaphones have a disc or two in them?

The Sport muffler would be the one with the pipes out the center...

Thanks for the input.

-B

[Zeke]

Megaphones by a long shot. The sport muffler has a low tone and the raspyness is regulated by the length of the stub pipes, IMHO. Mine has about half the normal length pipes and it rattles everything and sets off alarms. But, it's really not that loud, just big resonance.

There's no way you can silence straight pipes even with discs unless you restrict the thing until the car won't run well. Sports have just the right amount of backpressure according to the pundits.

[Vipergrün]

Thanks Milt, I have the sport muffler already with about 8" of the original length lopped off. I love the sound. I just got some headers and it got me thinking....

-B

[campbellcj]

Brad I'll explain it this way...

One of the starting dudes at Willow (I think his name is Denny but I always forget???) put his hands over his ears at a recent event whenever I pulled off the line with the open pipes

I have a 2-in, 2-out Dansk SS sport muffler as well, and when that is on the car, honestly I can barely hear it from inside over the carbs and other ambient noise. You can hear and feel the megaphones even with your helmet on.

[Vipergrün]

Funny Chris, an image of you backing your car off the trailer popped into my mind when I asked this....yep, I felt it! Nuff said

-B

[masraum]

Megaphones don't actually get discs, Supertrapps get discs, but they are not megaphones. Megaphones are basically just a tapered pipe bolted to the headers.

If you've never heard a car with open exhaust then you owe it to yourself to try it. It's pretty darn cool, and very loud. Not too bad at idle, but as soon as you touch the loud pedal, well, it's got that name for a reason.

[mudman]

I was thinking of making a set of megaphones just for fun, and to piss off my neighbor who repairs and races all sorts of 2 stroke stuff at all hours of the day. Anyway, should I make the flanges or are they cheap enough to buy, and will it mess with my CIS (2.4T 73.5)? Also, what length and diameter for the tubes?
-Jeremy

[1982911sc]

Would megaphones be too loud for road use? I saw a pair the other day that looked really cool and cheap to boot. Would they wake every neighbor for miles if when I come home at 3 a.m.?

[masraum]

I'd be amazed if you could get away with megaphones on public streets anywhere in the states on a regular basis.

You would wake the dead with megaphones. Have you ever heard a dragster, that's basically megaphones, just a pipe running out the back, no muffling of any sort.

[Schrup]

I just got my sport muffler installed & think it sounds just right. If it were any louder, it would probable attract unwanted attention.

[Shuie]

Brad, I had the same question shortly before I bought those headers. Check out the thread below. Theres another link in there to a thread about a Patrick Motorsports sport muffler.

http://forums.pelicanparts.com/showthread.php?threadid=146714&highlight=megaphones

Consensus was that the megaphones would only result pissing the neighbors off, losing midrange torque, and violating every noise ordinance in existence. My plan was to use the RSR headers to street adapters to a sport muffler from Patrick Motorsports.

[TerryBPP]

Originally posted by mudman
I was thinking of making a set of megaphones just for fun, and to piss off my neighbor who repairs and races all sorts of 2 stroke stuff at all hours of the day. Anyway, should I make the flanges or are they cheap enough to buy, and will it mess with my CIS (2.4T 73.5)? Also, what length and diameter for the tubes?
-Jeremy

I got the flanges from Mineke for $5 a piece. The hole was a little big but didn't interfere with anything. Search for project: Loudest exhaust ever. And yes I drive it on the street!

[campbellcj]

If I ever drove my car thru the neighborhood with the megaphones installed, I think an armed posse would be at my doorstep shortly thereafter. Sometimes just loading up the trailer seems to draw people out of their homes, especially the kids, to see WTF is going on outside

[dd74]

To mate megaphones and CIS requires some air/fuel adjustments, I believe. It's also the same when going from heat exchangers to headers.

I've debated megs and came away with they being inappropriate for street driving when you need low and mid-range torque. Megs seem to sap that as they're truly for WOT racing only.

And as others have said, they're too loud for the street. I've heard sports mufflers, and they seem no louder than many others, plus preserve the torque band.

At any rate, megaphones are even illegal on some tracks because of their loudness.

[IROC]

I ran Supertrapps for years on a 2.7 (with headers) and they are right on the verge of being too loud for the street. Many people (my neighbors) would say they *are* too loud for the street. :>) I would routinely set off car alarms. Driving through a covered parking garage produced an incredible level of noise from all the car alarms.

Having said that - they sounded wonderful. I loved the sound of those things.

Like dd74 says, I had to richen my mixture slightly to compensate.

Mike

[1982911sc]

Schrup what sport exhaust did you end up going with? I would really like to go with something just south of obnoxious but loud at the same time...if you know what I mean!