Effect of air into exhaust manifolds???
Thread Starter
Joined: Jul 1999
Posts: 2,926
Likes: 5
From: Tucson, Arizona USA
Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
Effect of air into exhaust manifolds???
Does the introduction of air into the exhaust manifolds via the air pump/diverter valve affect performance?
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Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://www.ozemail.com/au/jca69/mods/williesz/willie.html
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.
------------------
Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://www.ozemail.com/au/jca69/mods/williesz/willie.html
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.
Supreme Member
Joined: Apr 2000
Posts: 3,187
Likes: 0
From: E.B.F. TN
Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
If it does, it is negligable. The only problem I could see with them is the air is injected at a 90º angle to the exhaust flow. This may cause some turbulance that could impede airflow, but I think the exahust pulse would easily overcome it. Also, I'm not too sure when the computer switches from the injection of the manifolds to the cat. so it may be a non issue after the engine warms up.
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