
07-04-2009, 04:56 AM
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Registered User
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Join Date: Aug 2007
Location: South Australia
Posts: 512
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Quote:
Originally Posted by slyalfa
also it is my guess the the system is tuned to have a expander there. so going with a pipe would lose power. So if you do lose the cat put a muffler there.
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Me thinks you are expecting waaaaay to much from the Alfa Romeo design team!
They failed in many areas of building these cars (tho I still want mine in 1 piece again ), and you think they went to some great trouble to have some really well tuned exhaust after such an ordinary pair of manifolds (on the V6s. tho probably heeeaps better than most Aussie/American engines of that era) that relied on some specific cat converter volume and/or diameter?
Please don't mention back pressure and torque in the same sentence. That is a factual misinterpretation of what happens.
If Mr (or Mrs) thread starter wants some sort of dodgy, illegal cat replacement, I'd sujest that they put a piece of pipe that is the same diameter as the rest of the exhaust inside the cat body.
Tho a new, replacement cat is the obvious true sollution.
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Alfa 75 Potenziata, Twincharged AW11 MR2, RB20DET S13 Silvia
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