here is how it was tested....and not heavily modified at all
Quote:
The baseline run was completed using the stock air filter box minus the tubing that runs from the fender to the box. Instead we had an elbow attached to the inlet of the filter box. The only other modifications to the car are a MagnaFlow muffler and Denso Iridium spark plugs. Then for the second run we disconnected that filter box and connected our intake system.
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this taken directly from their web-page