Filter Test w/ Velocity Reading

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Here is a Filter Comparison that Chad502ex/Precision Motorsports did to show Velocity #'s and HP #'s on the Top Filter's on the Market Including the NEW DRG's. EACH Filter Was Dialed-IN to the SAME A/F Ratio so that this would be a Fair Test. This Test was performed on a 440ex. This was done with Stock 400ex Airbox and Lid off. We are showing Veloctiy #'s to show how much air was being pulled through the Filter.


Filter Applications:

TwinAir Powerflow Kit- 400ex

K&N- 400ex, 04'/05' TRX450r

DASA- 400ex with Pagram Adapter, 04/05 TRX450r with Pagram Adapter, 06' TRX450r with No adapter

DRG 06- 400ex with Pagram Adapter, 04'/05' TRX450r with Pagram Adapter, 06' TRX450r No adapter

DRG EXR- 400ex No Adapter Needed, 04/05 TRX450r NoAdapter Needed, 06' TRX450r No Adapter Needed

We tried to test FCI Test Filter in this, but it would not fit the 400ex or the 04/05 TRX450r box. It will Fit the 06' Box.

[Mobile Dyno]

Here is the Velocity #'s that we got. We achived these readings by using a TESTO 445 Hand Held Velocity Meter. NIST Tracable Calabration Due date 04/19/06. We did this by placing the probe in the Air Boot Resonator Hole. We measured the flow from the Center of the Boot. It was repositioned everytime in the same location. We tested every 1,000 RPM from Idle to 9K(Stock CDI). This tells us what the engine pulls through the filter.

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Results

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Here is the A/F Ratio. We set ALL the filters To the same Ratio. The jetting to get this was:

Looking at the DYNO Graph:

Blue= TwinAir powerflow: K175 main

Red= K&N: K175 main

Green= DASA: K178 main

Dark Blue= DRG 06: K178 main

Brown= DRG EXR: K180 main

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Here is the Hp #'s. With all the A/F's in the same place we can see the comparison on the filters.

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Here it is boken down:

DRG EXR vs TwinAir

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DRG EXR vs K&N

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DRG EXR vs DASA

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DRG EXR vs DRG 06