Cone induction kits - The Unofficial BMW M5 Messageboard (m5board.com)

Brett_M5 · 31st December 2006, 03:32

Can anyone give me a rough estimate of the power increase you'd expect to get from fitting an induction kit? I have a green induction kit fitted to mine: http://www.greenfilters.com/

I'm guessing it won't be much extra bhp?

ard · 31st December 2006, 05:20

Quote:

Originally Posted by Brett_M5

I'm guessing it won't be much extra bhp?

Bad guess.

You are likely LOOSING bhp due to the warm air you are sucking into the engine compared to a stock intake.

There is disagreement as to how much HP you can gain by just eliminating the stock filter (ie this is a 'perfect' filter with no resistance) AND KEEPING THE FACTORY 'COLD AIR' intake. Estimates are 0 to 15HP possible with NO FILTER.

However, it is foolish to believe that one can buy a filter that has zero resistance to flow yet is a good filter. As you reduce the filtration efficiency away from stock you may gain a few HP....

nerio02 · 31st December 2006, 05:23

due to heatsoak i would say that you'll rader loose power than gain.the only thing that you hear is a more sporty sound thats all .especially with these green setup i would think. they are in the enginebay and there isent even a heatschield who protects it a little bit.so i wont put my money on extra hp's

sorry

mohamad baajour · 31st December 2006, 11:22

i used green filters and removed them on the second day! less hp but only nice sound when cold.

Need4Spd · 31st December 2006, 18:59

Also, most cone filters use oil/gauze filters, and the oil can contaminate the MAFS and rob power. Replacing the stock filter with one of these oil/gauze filters can have the same effect.

Beamer_usa · 31st December 2006, 19:11

Do not oil filters, it will contaminate the MAFS