How loud is a standard Tuscan?

[chim450]

I am a proud owner of a Tuscan 4.0. I have "traded up" from a Chimaera 450. Wow, is this Tuscan LOUD. A real throaty rort with real bass, and lots of pops and crackles on the overrun.

I wasn't expecting this having come from a V8, the cans look standard. I have driven a couple of Tuscans before and they were nowhere near as loud. Could sleeving a standard exhaust do this?

[plipton]

Have a look down the bore of the cans. If there are hundreds of little holes then they are standard cans (and, therefore, reasonably quiet). If it's smooth then they are sleeved.

Has it been decatted as that adds a few dB to the equation!!

PS. I traded up from a Chim 450 too I can't believe how different the 2 cars are.

>> Edited by plipton on Friday 9th January 12:14

[Lee02]

If it is poping on over run its probably been de-catted. i have done this to mine and it is noiser than standard but sounds better.

[Bob the Planner]

My Tuscan booms and cracks - sort of like a cannon being fired - but not crackles or pops. It does have cats and standard exhaust though. It seems to be getting louder the more miles it has on it (now 13k)

Bob

[matt_c]

Just for info, legal road noise limit is 101db (not that the police could ever check this!!!). Anything higher tends to set off car alarms (or house alarms if you're really lucky - I favourite pasttime of mine!!).

[VYT]

Ooh, so the 118dB from my old Cerb was a tad OTT then .

[matt_c]

1db increase is double the sound. so 118db must have been ear bleedingly loud!!!!

[pvapour]

matt_c said:

1db increase is double the sound. so 118db must have been ear bleedingly loud!!!!

I SAID, IT MUST BE EAR BLEEDINGLY LOUD!!!!

[z064life]

pvapour said:

matt_c said: 1db increase is double the sound. so 118db must have been ear bleedingly loud!!!! I SAID, IT MUST BE EAR BLEEDINGLY LOUD!!!!

LOL. CAN I HAVE THAT IN WRITING, PLEASE - DIDN'T QUITE CATCH THE LAST WORD.

[HarryW]

Thought double/half was +/-3dbs myself, either way every dB is noticeable .

Harry

[pies]

I thought db's doubled every 10 i.e 70db is double 60db and 60db is double 50db

[HarryW]

Nah, defo 3dBs down is half power in my book.

H

[pies]

I knew ten came into it somewhere as its a log

but

Decibels (dB): A measure of the sound level (loudness). The decibel scale is a logarithmic scale; as an example, a 90 dB noise is TEN times louder than a 80 dB noise.

[HarryW]

pies said:

I knew ten came into it somewhere as its a log but Decibels (dB): A measure of the sound level (loudness). The decibel scale is a logarithmic scale; as an example, a 90 dB noise is TEN times louder than a 80 dB noise.

AH its coming back to me, 80 dBs is 10 power 8, 90 is then 10 power 9 i.e. 8 zeros or 9 zeros ..................god I'm still thick though

Harry

[VYT]

matt_c said:

1db increase is double the sound. so 118db must have been ear bleedingly loud!!!!

It was loud outside, but much quieter than a standard Chim inside, well until the throttles opened and the Tachometer was heading for 6k. It took 4 extra silencers to get within the Castle Combe 100dB noise limit.

[Mustang Baz]

An old thread - but anyone have any recent feedback on this? I am keen to look at an EVOActive track day at Thruxton, but they have a 90db limit, and I think I likely exceed this with standard exhausts, let alone with my Carbon Cans!

>> Edited by Mustang Baz on Friday 2nd June 11:42

[dealmaster]

Mines fitted with CCC's - very loud. People hear you before they see you!
Had a few complaints from neighbours already! Is pretty funny when you start setting of car alarms with the shear boom

[tvr5000]

Bob the Planner said:

It seems to be getting louder the more miles it has on it (now 13k) Bob

That would explain why mine can make your ears bleed with its bangs and pops, 35k now. The garage did ask if I'd had it decatted from its last visit cos it was the loudest one they'd had in. I think the cats are still there but you never know!!

[whitey]

The cats burn out hence it gets louder.

Unfortunately this leads to debris from the cats getting back into the engine(yes I know hard to believe it's something to do with the pulsing of the exhaust/back pressure etc) and also potential for the cats to be blocked slightly which reduces performance, causing rich running and exhaust valves burning out.

If I ever bought another new speed 6 car(not that I ever would) I would de-cat the bastard from day one.

[tvrinbfg]

I was on a track day today. Standard car/zorst made 98dB at 4000 rpm.