Thread: Dyno required?
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Old 01-09-09, 05:32 AM   #8
Old Git
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Join Date: Feb 2009
Location: Worcester
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Default Re: Dyno required?

Quote:
Originally Posted by Speedy View Post
What I consider to be "heavy sooting" is when you get a crumbly build up, stick your finger up the pipe, (ooh er missus!), if it comes out powdered black, the same texture as say icing sugar, then I'd say thats heavy sooting.

Picture a car exhaust before the invention of the catalytic converter.

My exhaust is more black than dark grey, but there is no powdery residue.
Interested in this, sorry to steal the thread, I have restrictor washers in a curvy, with aftermarket exhaust on which has black 'sooty' deposits (naughty sooty!, wheres sweep?), is this due to the washers, should I turn down the mix screw on the carbs???
Ta.
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