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Re: Cat replacement--opportunity for an upgrade? ('00 Aero) Posted by MI-Roger [Email] ![]() ![]() In Reply to: Cat replacement--opportunity for an upgrade? ('00 Aero), Scott, Wed, 28 May 2008 17:05:41 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The downpipe is the first section of the exhaust, connects directly to the turbo, and contains the two factory catalytic converters. The factory part is 2 inches to 2-1/2 inches in diameter.
A performance downpipe is larger diameter (3 inches) which allows the exhaust gasses to exit the tubo faster giving quicker response and slightly more power. The power increase is more noticeable if a larger exhaust system is installed too.
Besides providing an increase in performance, these aftermarket components are much less expensive than the OEM part, and much less expensive than a OEM replacement catalytic converter. More power and less cost make these a great choice when the original converter plugs from age and miles.
See link for one source of this component.
posted by 24.23.71...
_______________________________________ Saabs owned: 2008 9-5 Aero Sedan, sold at 227K miles 2006 9-3SC 2.0T - Wife's daily driver 2000 Viggen Convertible - Sold May, 2022 1964 Quantum IV Formula Car - Retirement project 2000 9-5lpt Sedan, sold at 318K miles
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