k&n air filter

Larry Zoia phezanthawk at wowway.com
Tue May 15 14:07:51 PDT 2007

> Larry
> This is a mod I've been contemplating for quite awhile. I'd be interested 
> to hear more about the performance benefits and/or consequences you've 
> noticed since making the change.
> Dave B

We must understand that my perception of performance gains is by the 
seat-of-the-pants dyno.
This is also contributed to by more intake noise...kinda
like taking the air filter off my dad's 1963 Pontiac Bonneville.

I can assure you that there is improvement.  I suppose
a dyno run would be necessary to quantify the improvement, and I suspect 
somebody out there has
already done this.

I also have dropped a tooth on the countershaft sprocket, but that was done 
long before the intake mod.

It seems it may have lost a little grunt below 4k rpm, but the midrange and 
high end are definitely substantially stronger.

Still, all the R&D has been done.  I just followed Mr. Northrup's 
instructions, and I was good to go.

Larry in Michigan 

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