The usual exhaust tip is the last restriction in the system. Put one on a flow bench and flow typically drops, especially when the tip has internal features hanging into the stream. Our Banks Monster Exhaust System takes a different approach. This tip uses a reverse-curve rocket-nozzle shape and a larger outlet area so it doesn’t act like a plug on the end of the pipe. As exhaust moves over the contour, it creates a partial vacuum at the outlet—enough to produce negative pressure and help scavenge the pipe. That means less backpressure where most tips add it, and better exhaust flow from the DPF-back system all the way out.
The discussion focuses on how exhaust tips typically affect flow on a flow bench. In many cases, adding a tip reduces flow, especially when internal features protrude into the exhaust stream to mix in fresh air or cool the tip. Those features can create restriction and increase back pressure.
The tip described here is engineered differently. It uses a reverse-curve, rocket-nozzle shape that transitions to a larger cross-sectional area than a conventional exhaust tip.
The larger exit area is intended to reduce restriction rather than introduce another choke point at the end of the exhaust system.
According to the explanation, airflow moving across the reverse-curve shape creates a low-pressure region that helps draw additional exhaust from the pipe.
Rather than simply minimizing back pressure, the tip is designed to actively promote exhaust scavenging. Banks says the effect can produce pressure below atmospheric at the outlet.
The speaker emphasizes that this behavior was the result of deliberate engineering and extensive development.
According to the video, the tip took approximately two years to develop and refine before achieving the desired flow and scavenging characteristics.
