by Reed on December 8, 2009
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?
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)
by Reed on December 8, 2009
I am looking for something under 700 dollars. I want to be moderately loud but not like a fart cannon. Loud but natural sounding ya know?
hamman or dinan will give you a nice ferrari sounding one. or MY FAVORITE !!!!! hks
watch this vid
http://www.youtube.com/watch?v=rMSF3O5OS5g&fmt=18
by Reed on December 8, 2009
I already have the K&N Gen II CAI, and will soon purchase the shark injector. Just wondering what is the best HP for my buck.
Im guessing the best exhaust for a BMW would be to get a aftermarket exhaust from a BMW tuning company like Hamann, Dinan, AC Schnitzer, Active Autowerke, Alpina, Meistershaft, or Hartge. Maybe even go for brands that only specializes in exhausts like GReddy, Stillen, Flowmaster, Magnaflow, or Borla. If I was you, I’d go with a BMW tuning company from Germany.
by Reed on December 8, 2009
im planning to buy an used ac schnitzer exhaust for my e46 bmw 325i for around $400 which is pretty cheap.
both sound and hp but i could get a new non name brand exhaust for the same price but i dont want to because it probably sucks
ac schnitzer is a great brand. but 400 for a used??? evennnn for AC schnitzer is pretty big stab in the wallet. and depends wat you mean by "good". sound? hp boost?
