Sport exhaust and air filter for my BMW M3 E46?

I have a stock M3 343 horse power. I need to know if i get a sport exhaust and a air filter, how much horse power will it give me?

Comments

3 Responses to “Sport exhaust and air filter for my BMW M3 E46?”
  1. critic says:
    October 24, 2009 at 3:56 pm

    With an aftermarket air filter on your car I seriously doubt you will get 15-20 (regardless of what the ads say….and if you get close to that gain, thats at the crank and so in terms of rwHP, where you will really notice it – will be minimal.

    Now thats not to say if you want to increase your performance – they are needed.

    HP gains are expensive and for your car considering stock rating at the crank is in the range of 330HP.

    true meaningful gains will be headers (intandem with perf.
    exhaust catbacks)
    http://www.modacar.com/products/BMW/M3/MODAHEA/

    ultimately if you want to seriously enhance your car, it will be via forced induction (supercharger or turbo).

    there are bolt on installations available, low boost (requiring NO enhancements to your heads or internals). this will give you plus100hp gain when the supercharger is engaged……truly meaningful
    http://www.vf-engineering.com/index.php?v=/kit_bmw_e46_m3.php
    http://www.youtube.com/watch?v=ii16X1UqJDs

    cheers , engineer (owner – past & present of supercharged cars, fan of forced induction)

  2. C.T. says:
    October 24, 2009 at 3:56 pm

    About 15-20 more horse power.

  3. Jy S says:
    October 24, 2009 at 3:56 pm

    Right,15-20~~

    http://www.toboc.com/forum3/DEFAULT.ASPX?g=posts&m=1357

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