Catalytic Converter Flow Bench Test Results

March 13, 2001

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Catalytic Converters
Catalytic Converter Flow Bench Test Results

This is just the data and not a write up. You can read the small discussion of results here, Catalytic Converters: Ready, set, flow!

Tom (onfire) and I took the day off from work and flowed a bunch of Catalytic Converters. First off, let me thank Tom for letting me come up and participate.

Also, a big thanks to Andy C. (Go FasTA) for letting us borrow his FLP cat at the last minute.

Finally, a big thanks to White Performance in Kingsport, TN for their patience and help. Joey did a great job and was very informative and I believe Brian came in to offer a helping hand when an extra set of hands were required.

This should get the attention of a lot of people that claim the Driver's Side cat is the high flow cat because it is also found on past Corvette's. Not true. We can see that the passenger side cat out flows the driver's side easily. You never know til you flow, so help stop the bad information.

- Eric

Actual Recorded Information
Exhaust pieces were flowed by blowing instead of pulling

Data Converted to 28"
	CFM @ 20.4" Inches of H2O	CFM @ 28" Inches of H2O

Passenger Side Catalytic Converter 2.50" in/out	299.5	350.9
Driver's Side Catalytic Converter 2.50" in/out	268.3	314.4
TTS Bullet Catalytic Converter 2.50" in/out	277.1	324.6
Carsound Catalytic Converter 2.50" in/out	372.7	436.7
FLP Catalytic Converter 2.50" in/out	376.0	440.5

CFM @ 28" Pressure Drop was calculated by using the following formula

Where:

FR₀= Flow rate at original pressure drop (ft³/minute)
FR₁= Flow rate (ft³/minute)
PD₀= Original pressure drop (inches of H₂O)
PD₁= Desired pressure drop (inches of H₂O)