bell mouth exhaust tip?

Hi all.. need some opinions..

you reckon it would smooth the sound?
make it louder (trumpet effect) ?

or both? or do shit all?



Assumption: car is piss loud.. and almost unmuffled :thumbsup:

exhaust ...ahhah wtf???
.............

Some of the F3 teams, most notably TOMS, used to run "megaphone" exhausts that had a tapered opening. It probably started at about 2 1/4 and ended up at 2 3/4 over a foot or so of length.

F%$#in' loud, though!!

Quote:

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Originally Posted by fatboyz39

exhaust ...ahhah wtf???

do that for your intake...ill be 'fully sick'

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ahaha

like the spoon muffler... and some aftermarket ones...

is there a reason for the tappering:confused:

Quote:

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Originally Posted by EfiOz

Some of the F3 teams, most notably TOMS, used to run "megaphone" exhausts that had a tapered opening. It probably started at about 2 1/4 and ended up at 2 3/4 over a foot or so of length.

F%$#in' loud, though!!

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very interesting.. however is it muffled at all? or is it str8

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Originally Posted by BlitZ

ahaha

like the spoon muffler... and some aftermarket ones...

is there a reason for the tappering:confused:

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didn't mean it that way bro.....

im pretty sure on a street car the tip has no big impact on exhaust note

what exhaust do u have atm? spec II or something?

Quote:

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Originally Posted by BlitZ

very interesting.. however is it muffled at all? or is it str8

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No mufflers but we ran straight 25/8 and 23/4 pipes and they were relatively quite (still 94db trackside).

i dunno about teh spoon exhaust but i c on motorbikes they have that same taper ur talking about.. so i think they must do something for noise.. coz i see on alot of yoshimura exhausts on motorbikes.

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Originally Posted by egSi

im pretty sure on a street car the tip has no big impact on exhaust note

what exhaust do u have atm? spec II or something?

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haahaha GF bought me a welder for christmas...
I welded myself a straight pipe - no muffler..

Its deadly loud.. but it also has a crazy bububububububu at about 3k... I want to try and tune it... ehhehe:thumbsup:

Quote:

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Originally Posted by EG5[KRT]

i dunno about teh spoon exhaust but i c on motorbikes they have that same taper ur talking about.. so i think they must do something for noise.. coz i see on alot of yoshimura exhausts on motorbikes.

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yeah .. eheheh thats why i kinda want to try it.. I just want some technical info before fplking out some money to to an exhuasyt shop to open the mounth for me