heinrich

I've never heard that .... and elegance sits behind the starting line while boost eats up road. You CANNOT gain even 10% of the power with elegance. If you wanted to reach 650hp with elegance it would cost you a million dollars.

danglerb

http://www.supercars.net/cars/3448.html I bet the motor even fits in a 928.

John Veninger

A little less than that

JHowell37

I only have one question about modified airboxes and free-flowing K&N style air filters. How long will the engine make increased power from these mods? Lowering the restrictions is great for building power and moving more air, but they also allow more dirt to enter the engine will accelerate wear.

John Veninger

I used the stock paper air filter.

mark kibort

you wont notice any difference with a stock filter vs paper, as there is substantial leaking on the 928 air box under vacuum. stock filter causes about .1"Hg pressure drop across it in a sealed air box. without sealing, both are near .2-.3 . there certainly is more restriction with stock vs paper filters, but the problem with almost all the dyno tests, is that the air box leaks. once the air box leaks vacuum, then the test is meaningless. the meaning of this is that the air is leaking around the air box seal bringing in unfiltered hotter air. thats why i vent and seal the air box. (and use a very lightly oiled KN)


MK

mark kibort

oiled cotton filters trap as much dirt as you would want. however, the leaking air box kind of defeats the goal of real clean filtered air, which 99% of most 928 owners have. ive raced the heck out of a 84 , 170,000miles and when it was apart, no wear found, anywhere!

mk

Tom Cloutier

The same is true of exhaust mods. Seems our perception of power is strongly (and often erroneously) influenced by increases in noise. Our seat-o-the-pants dynos are relatively insensitive and real suckers when it comes to noise. It's very difficult to accurately detect 30hp differences with our butts and feeling 5 or 10hp is just about impossible. Perception is cool if it makes one happy, but don't bet your pink slips!

Happy New Year,

Tom Cloutier

heinrich

Well then, post your suggestion sir, cause there is no "elegance" that will get you to 650. You will need a massive rebuild with stroke and bore OR huffing. Any other options?