why does the pulleys gain less at high rpm. shouldn't it gain more at high
rpm since the pulley is spinning the accessories faster? Did you test just
the crank pulley or the complete set?
----- Original Message -----
From: "Mike Kojima" <[EMAIL PROTECTED]>
To: "Sentra Mailing List" <[EMAIL PROTECTED]>
Sent: Wednesday, September 20, 2000 8:42 PM
Subject: SML: Underdrive Pulley Tested
> Today I tested the Unorthodox Racing Underdrive Pulley. I was expecting a
> gain of around 5 hp to the wheels which is typical for a SR20 powered car.
> Since the GA16 has the same accesories but less power, I was hoping for
even
> a greater gain.
>
> Unfortunatly the results were less than I expected. The Pulley made one
> more peak hp but it was really more like two more peak hp because 200
> hundred rpm away from the power peak was a soild 2 hp increse. In the
> midrange there was a 3-4 hp gain.
>
> Overall the pulley did help power, especialy the area under the power
curve
> and made the engine more free reving. Since it is fairly low priced, I
> would say its a worhty mod.
>
> Still the biggest bang for the buck so far is a cat back exhaust, followed
> by the CAI with the UD pulley third. A Hotshot header and a JWT ECU and
NOS
> system will be tested next. I also plan on helping with the JWT cam
> development and the Hotshot turbo kit. A big bore throttle body and
> headwork will also probably be evaluated in the coming months.
>
> Mike
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