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Old 10-07-2012, 06:50 PM
Elk Elk is offline
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Quote:
Originally Posted by CALWATERBOY View Post
There's a boost, smoothness & torque, beyond doubt - it's movement off-idle I'm talking about.
I appreciate that you believe this. Expectation bias is exceedingly powerful.

Engine engineers will sell their first-born for a 1HP increase. They make many minute changes to engine design for much less than this. If removing the flap increased power to this degree it would not be there.

The 3% improvement realized with a full cat-back is difficult to feel as seat of the pants. But, it's louder so the driver thinks he feels more power. Even on a dyno one has to be careful to control all variables (heat soak, etc.) to even accurately measure a difference.

Let's assume the flap-mod produces a full ten percent of a cat-back - a very generous estimate. You honestly believe one can truly and accurately feel a 1-2 HP increase in a 250hp-300hp engine?

Enjoy the mod if you like the sound. Don't fool yourself into thinking you have a perceivable, or even fractionally measurable, increase in power.

Then there is the magic spark plugs, special magnets, EMI/RFI filters, special power producing oil additives . . . in no time an F30 can produce 400hp - 500hp. Easy.
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