Previous poster said:Quote: Originally posted by Dunc on 13 February 2007
Actually Philip, Ade apologies in advance for veering from the original topic, could you describe the exhaust layout on the cup car - i'm curious to know if it is a straight through system or wheather there is any form of silencing?
And a more silly question, do they require cats?
From the 'Technical Manual' "Exhaust system with modified catalytic converter and silencer, 110 db(A) in accordance with the DMSB noise regulations"
There was an option for the '04 and '05 model year to have a 103db(A) modified system - but since UK circuits are either 98db or at most 101db when restricted, who cares!
The earlier cars had side exit exhausts and a completely different exhaust system close to the road cars, allowing silencing mods much more easily - my old '02 car was down to about 99db - but the '04 and '05 cars are completely Motec based - NOT Motronic - so the 'tuning' of the air intake and exhaust is much more finely balanced.
I'll get a photo of the underside of the system when she's next on airjacks in a week or so, if you're interested.
HTH
Philip
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