So I was thinking.....there are a lot of devices to increase the air pressure before combustion, i.e. supercharger, turbocharger, etc.....but wouldn't decreasing the pressure after combustion have the same effect, of more, less restrictive airflow through the engine?
I know that larger headers, no cats, etc accomplish this, but what if high velocity flow was added to the exhaust system?
If you increase the velocity of air, the pressure decreases, so....if you took some airflow from outside, and routed it into your headers, or catback, either one.....that would decrease the pressure in the exhaust, and it would kind of pull the exhaust gasses out, allowing the piston to come back up faster and easier? So rather than the piston pushing the gasses out, they'd be pulled out?
I'm thinking if you're driving 60mph, or better yet, like 100 mph, you'd have some pretty decent velocity if you ran it through a nozzle routed into the exhaust. Although, I'm thinking the effect would be minimal, and if it works, somebody would havae already done it, but I like to think of these things regardless. Any thoughts????
I know that larger headers, no cats, etc accomplish this, but what if high velocity flow was added to the exhaust system?
If you increase the velocity of air, the pressure decreases, so....if you took some airflow from outside, and routed it into your headers, or catback, either one.....that would decrease the pressure in the exhaust, and it would kind of pull the exhaust gasses out, allowing the piston to come back up faster and easier? So rather than the piston pushing the gasses out, they'd be pulled out?
I'm thinking if you're driving 60mph, or better yet, like 100 mph, you'd have some pretty decent velocity if you ran it through a nozzle routed into the exhaust. Although, I'm thinking the effect would be minimal, and if it works, somebody would havae already done it, but I like to think of these things regardless. Any thoughts????