Resonance pulses and back pressure may affect the stability of knock intensity signal.
Eliminating the interference of the variables makes the octane test result more consistent and accurate.
Meanwhile, this exhaust system can effectively reduce noise and air pollution.
Figure: Proper Installation of the CFR Engine Exhaust System
(1) Octane Engine (2) Cooling Water Copper Tubing
(3) Flex Exhaust Manifold (4) Spray Ring Assembly
(5) Surge Tank (6) 2 in.Pipe Stack
(7) Cooling Water Drainpipe