Quote:
Originally Posted by jeff88
Can you expand your thought process a little more. Putting a turbo in and just blocking the exhaust will have two very different results, so what are planning on doing? I do like to see experiments!  |
It's not so much "blocking" the exhaust; rather, it's the idea that placing a restriction in the exhaust may:
- (of course) deliberately raise backpressure, which would
- cause the EGR system to suck in more exhaust gas, which would
- (this is the key here) cause intake manifold vacuum to lower, which would
- cause an increase in fuel economy.
This would only work, of course, at part-throttle. Peak engine power would of course suffer as a result.
This is the idea that I am gaining from pgfpro's post above, where he saw a 10% increase in fuel economy at part-throttle, after installing that eBay kit on his son's Civic.