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Air Induction Flow Bench Test Results

This is just the data and not a write up.  I hope to have an article ready by the end of next week.  We flowed a variety of air induction pieces so stay tuned for those results as well.

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

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.

Notice that the K&N air filter actually increased the air flow over running no filter at all.
Bellow is the flexible rubber piece between your throttle body and mass air flow housing.
Fernco is the piece that people substitute for the bellow.

- Eric

Actual Recorded Information
Induction pieces were flowed by pulling instead of blowing
					Percent Flow	Flow Multiplier	Inches of H2O	CFM
TB + Bellow + Stock MAFHS + Air Lid					63	449	2	282.9
TB + Bellow + GMS Car MAFHS + Air Lid					65	449	2	291.9
TB + Bellow + GMS Truck MAFHS + Air Lid					67	449	2	300.8
TB + Fernco + Stock MAFHS + Air Lid					64.5	449	2	289.6
TB + Bellow + SLP 85mm MAFHS + Air Lid + Lower Airbox + K&N					67.5	449	2	303.1
TB + Bellow + SLP 85mm MAFHS + Air Lid + Lower Airbox					67	449	2	300.8
TB + Bellow + SLP 85mm MAFHS + Air Lid + Lower Airbox + GM Filter					58.5	449	2	262.7
Data Converted to 28"
					Percent Flow	Flow Multiplier	Inches of H2O	CFM	CFM @ 28" Pressure Drop
TB + Bellow + Stock MAFHS + Air Lid					63	449	2	282.9	1058.4
TB + Bellow + GMS Car MAFHS + Air Lid					65	449	2	291.9	1092.0
TB + Bellow + GMS Truck MAFHS + Air Lid					67	449	2	300.8	1125.6
TB + Fernco + Stock MAFHS + Air Lid					64.5	449	2	289.6	1083.6
TB + Bellow + SLP 85mm MAFHS + Air Lid + Lower Airbox + K&N					67.5	449	2	303.1	1134.0
TB + Bellow + SLP 85mm MAFHS + Air Lid + Lower Airbox					67	449	2	300.8	1125.6
TB + Bellow + SLP 85mm MAFHS + Air Lid + Lower Airbox + GM Filter					58.5	449	2	262.7	982.8
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)

Web Author: Eric Barger  help@installuniversity.com
Copyright © 1999 - 2002  Eric Barger.  All rights reserved.
Revised: June 07, 2007.