exhaust system idea

[Jim Yeagley]

Wasn't the original question about the concept of a variable back pressure
exhaust system?  I think the idea is great, low to mid rpm gets more
backpressure, then as rpm's increase, backpressure decreases to none.
That's where the open pipe idea came from.

If this idea were coupled with a variable valve timing setup, it would allow
the best performance through all rpm ranges.  Of course, it's all shooting
from the hip theories!

Jim Yeagley
1996 Dodge Indy Ram
See it and many others at: www.indyram.org
1975 Pontiac Grandville Brougham Conv. (in baskets)
webmaster at indyram.org
jimyeagley at stratos.net