Miata Mailing List: April 1997, Message #115
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From: 	James McElroy <mcelroy@ma.ultranet.com>

Subject: Filter charger dyno results?

Date: 	Tue, 1 Apr 1997 17:37:18 -0500



Just curious if there are any reliable dyno results on miata filter

chargers.  I was at HMS Motorsports in Marblehead Mass. a few weeks ago and

watched a 92 VW GTI with a g-60 corrado motor run on their drive on dyno

with a stock airbox w/ standard K&N filter and then with a K&N filter

charger setup.



The car lost 15 peak horsepower with the filtercharger and was down across

the entire rev range (in torque as well).  HMS said they've seen similar

results on bimmer's; they said unless there was ductwork added to the

filter charger to get COLD air to the intake, the filterchargers were worse

than stock....



I thought it was pretty interesting considering what most aftermarket vw

tuners claim about horsepower gains with the filterchargers (I haven't look

at this for our miata because we need it to be solo ii legal).



P.S. The dyno had a huge fan blowing cold air into the grill, so the fact

that the car was sitting still shouldn't matter...





___

James McElroy

mailto:mcelroy@ma.ultranet.com

92 GTI 2.0 16V w/131k (ported&polished/Brospeed header/Koni

adj/SofSports/etc.)

97 Miata R purchase pending (long Solo II stock legal wish list in progress)