[93'DET]

ACTUALLY...using a DYNO to prove a change that is 10 HP up or down is not accurate unless it is under VERY controlled conditions. Changes in Air temperature, humidity level, Barometric (atmospheric) pressure, engine temperature, tranny temperature,and even the dyno's temperature can change the HP/TQ readings that much.

If you run a test on a car after you just drove it to the dyno and then install an air filter -- then wait until the car is completely cooled down -- you WILL get a big HP increase. But it won't be because of the air filter...

THIS!

4whp sounds like dyno noise.

 

[93'DET]

Care to elaborate?

Oops, sorry...probably too big of a word for you.

What do you mean?

Your high horse...get off.

I was agreeing with you. Any "gain" under 10whp is considered "dyno noise" and shouldn't really be looked as an improvement. So all the variables you stated is what can cause inaccurate readings on a dyno. I'm just telling everyone that what you just explained is correct and "THIS" needs to be read again.

 

[93'DET]

So what your saying is that you dispute any dyno claim that is not at least what? 10HP? 20HP? TurboKits.com claimed +6HP on a dyno, do you dispute that as well? Not all parts make large gains, and if you can manage conditions then a dynometer is an accurate representation of power. I would like to point out that this was done in SoCal in fall, so the weather outside is ideal for these sorts of measurements.

I, and many other, have held to the philosophy that a anything less then a 10whp gain is too small for it being considered a substantial gain. Yes products can increase a reliable 6whp, but the product, let's say an intake, will change the power band slightly and the driver will feel that change MORE then the 6whp. I never stated that a dyno can't represent accurate data.

I have pulled three runs back-to-back with the same car, on the same dyno, with no changes and seen different readings each time. Differences as much as 7 HP!

Thank you!

 

[93'DET]

I think we all need to realize that volumetric efficiency plays a HUGE roll in how the Forte will produce power, even with a tune.