Re: [alfa] Re: Quadraflows - clarification

[Jorge Mazlumian <jmazlumian@xxxxxxxxxxxx>]

----- Original Message ----- 

> I said:
> The original claim of "average 7 horsepower increase over the stock Alfa
air
> filter", according to the Alfa Ricambi manual, has always been questioned.
> The theoretical increase in flow is offset by the hotter engine bay air at
> the intake, as opposed to the fresh cool air rammed into the spica airbox.
> The solution?  K&N filters for the Spica box.  Proven beneficial?  I think
> not.
>
> **************************
John Thompson responded:
> Several years I did a test using a friends 1974 SCCA ITB GTV during a dyno
> session. It was February in Los Angeles, so the temperature, while not
cold, was
> mild and a fan was blowing air through the radiator. The car was equipped
> with Quadraflows because of the claimed horsepower gain.
>
> After an hour or so of making adjustments to maximize horsepower, we
> installed my Spica airbox equipped with K&N filters. The results were that
we got from
> 3 to 4 more horsepower using the airbox over the Quadraflows
<snip>

*********************************
Interesting observation.   Your test *proved* that the airbox gave the
engine 3 or 4 more horsepower over that of the Quadraflows, refuting
Shankle's claim.
When I said: "The solution?  K&N filters for the Spica box.  Proven
beneficial?  I think not.", I was referring to the K&N filters.  K&N also
claims horsepower gains in other applications, however I understand that the
gain is not so evident.  Anybody has dyno results using K&N vs other
filters?

Jorge Mazlumian
a few cars, all with K&N *performance* filters.
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