On Sat, 21 Dec 1996 20:50:19 -0500 <larry.g.unger@lmco.com> writes:
> The following is from Peter Burgess's new book ... "How to Power Tune
MGB 4-Cylinder Engines for Road & Track":
>
> "The standard twin-can filters do a good job of silencing the intake
noise, and the paper filters do a good job of keeping the dirt out, but
the small intakes on the cans seriously restrict airflow. Replacing them
with a good high flowing filters will result in a 3 to 5bhp gain through
improved volumetric efficiency.
>
> ..... It is important to note that when Burgess speaks of bhp increases
they are usually as measured at the rear wheels.
>
> Let me put this another way ... if a set of K&N filters do not increase
volumetric efficiency, then why is it that when you fit a set it is
recommeded that you fit a set of richer needles?
Could be that the richer needles are the source of the power gain,
justifying K&N's claim to increased power with their setup.
Barney Gaylord
|