Hi

Short of putting a whole new exhaust system on my car how do I make my car quiter?
I want to take my car on track days at elvington with a 98db noise limit, and I currently produce 105db
any suggestions would be welcome

thanks

You can use something like this



DB killer

Not guaranteed to reduce it enough. 105db to 98dB is a big leap....

How about a bolt on secondary can?

what engine are you running, i used a can from mnr and it reduced mine from 108 to 93 not bad value either

i tried the db killer and all it did was restrict the engine to the point where it would not rev

1.6l fiat muira engine with riat race can
friend has a vortex with an R1 engine with MNR's can and he's too loud for elvington as well!

which can does he have i had the really big one on no problems does it need repacking perhaps ?

David,

Simple answer is to fit a bigger can.

Some people have had success with an R1 can.

...or could you put this in line?
http://cgi.ebay.co.uk/Yamaha-R1-yzf-can-STUBBY-EXHAUST-Carbon-r1-gsxr-cbr_W0QQitemZ320330096996QQcmdZViewItemQQptZUK_Motorcycle_Parts?hash=item32 0330096996&_trksid=p3286.c0.m14&_trkparms=72%3A1299%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

Mark

[Edited on 12/1/09 by tul214]

How about two r1 cans ? fit a [ y ] after the manifold then two cans one over the other

Slightly OT but is dBA like dBV and dBW where a 6/3dB resp. increase means a double in voltage/power?

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Originally posted by DanP
Slightly OT but is dBA like dBV and dBW where a 6/3dB resp. increase means a double in voltage/power?

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Originally posted by jacko
How about two r1 cans ? fit a [ y ] after the manifold then two cans one over the other

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Originally posted by hobzy

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Originally posted by jacko
How about two r1 cans ? fit a [ y ] after the manifold then two cans one over the other

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I asked about this ages ago mid thread and never got a real answer Still got 2 R1 titanium cans sat in the garage waiting for a yeh or neh... anyone?

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Had 1600 CVH running at 105db and couldn't get on at Castle Coombe.

Side exit with Webbers (additional induction noise with webbers).

Largest Can possible is the answer.

Bought a silencer from Wunoff manufactured to match my current manifold pipe, reduced noise to 96db.

Speak to Wunoff and they may be able to give you some advice. He was dead right about mine.

Cheers

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Originally posted by davidinhull

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Originally posted by hobzy

quote:

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Originally posted by jacko
How about two r1 cans ? fit a [ y ] after the manifold then two cans one over the other

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I asked about this ages ago mid thread and never got a real answer Still got 2 R1 titanium cans sat in the garage waiting for a yeh or neh... anyone?

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Can I suggest you go ahead, then let me know the answer!! (or let me have the cans at a ridiculously low price and I'll give it a go)

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