In a message dated 2/13/02 11:52:06 AM Eastern Standard Time, sean_dmc1@xxxx writes: << True. This alone would not result in an marked increase in acceleration or bhp. Best estimates of these filters is a 5hp gain. >> In a message dated 2/14/02 7:36:04 AM Central Standard Time, jwit6@xxxx writes: <<> I ran my EFI Delorean on a chassis dyno with and without the entire air > filter assy and housing and only saw about a 1 hp gain without it.>> A couple of years ago we ran my Turbo Delorean on a chassis dyno using the stock airbox housing with a new paper filter to establish a base line. We then installed the "K&N Air Filter Kit" into the stock airbox and without any other changes saw a 3hp gain at the rear wheels. Marty [Non-text portions of this message have been removed]