Quote:
Originally Posted by AXMonster
Here's my interpretation on 'The Blade'
Its a thick fabric that the exhaust gas passes through.
It causes increased backpressure.
The increased backpressure causes more exhaust reversion during overlap...
I'm calling snake oil LOL
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The snake oil salesmen are out in full force these days, aren't they?
"I can take your silver and turn it into gold... give me your pound of silver and come back next Tuesday..." For me though, I'm glad these guys are around... It prompts the learning of things I never would have, by questioning the claims. On the other side, I hate to see good people get suckered into some scam.
Increased exhaust back pressure
can, in some instances, net a power increase. I've seen this on some normally aspirated race engines where the cam has a little too much duration, or the primary header tube is too large causing the exhaust port to over scavenge (draws some of the fresh intake charge, unburned, out the exhaust port). One 4 cylinder race engine of mine picked up a full 10hp at 7500rpm when we added a muffler. It's likely the exhaust to intake ratio of the heads (ports) didn't quite match the cam I chose, but it was amazing to watch while dynoing the two exhaust systems, back-to-back in A-B-A testing.