Cold Air Intakes

[freeparking]

I would like to add a cold air intake to my 92 m50. I dont want to spend an arm and a leg. Can anyone suggest a middle of the road set up that would do a nice job? TiA.

Waiting patiently for my first real upgrade. Bought a chip from Mark. He seems like a nice guy!

[bahnstormer]

u can cut some holes in your airbox for now...
that'll give u the cool sound...the oem filter
isn't really restrictive, in fact, it is massive...
if u put a KN in there it'd prolly be the same size
or smaller....and imho the kn is a hassle....

[Kalevera]

MASSIVE...indeed.


The K&N is not worth it - no power gains and possibly more damage to the engine due to a less restrictive filter.

[shogun]

In my opinion BMW has one of the best OEM intake systems.
Do not play with it.
If - however- you want to have more sound/noise, but same HP or less, than see below, but in my opinion the wrong way.
quote
u can cut some holes in your airbox for now...
that'll give u the cool sound...
unquote

[BigKriss]

how about making your own intake to fit on the stock air box. Removing the high beam light and add some 80mm PVC piping to a 120mm adaptor at the front (a speaker grill to cover the tube). I installed this setup with a dicky BMW sticker on top, it looks good, is solidly supported with a clean install.

The m30 has a EAT chip. I don't know if power has improved (i can't tell). After speaking to MarkD, he said that such an intake wouldn't do much. I do know that I don't have any flat spots in the rev range, throttle response is great. The amount of cold air has increased dramatically, does the engine need this though or will it help?

The induction sound from inside the car (when driving or at idle) is not noticable. You can only hear the intake when you put your ear against the front on the intake.

good luck


here are some pics

http://www.bimmer.info/forum/attachm...ntid=809&stc=1
http://www.bimmer.info/forum/attachm...ntid=810&stc=1
http://www.bimmer.info/forum/attachm...ntid=811&stc=1
http://www.bimmer.info/forum/attachm...ntid=812&stc=1

[freeparking]

Thanks for the input. Thats quite a diy job. Very interesting. I would hate to give up a high beam tho. My impression was that the cold air intake would produce more HP. Im on the fence because some say yes some say no. I guess
for now I will leave it stock. After all I dont plan on racing or anything. I just need to be able to put the wood down merging off the onramp to the interstate,
where tractor trailers aveage 75-85 in the right lane. (Crazy Ass NJ Drivers!).

[bahnstormer]

hey i'm from nj too =]
what you should do is merge on at 75 when u're on the ramp like i do...
that way to can accel to 95-100 and just comfy merge in...
to go 75 on teh ramps though u need suspension tuning! =]

[Jose]

Just changing the air filter won't give you any real gains, it's just that replacing the oem filter box by an "open"airfilter with a heat shield will give you a sharper engine-response when stepping on the throttle. Keep in mind, the open air filter will cludder after less than 10.000 miles and your average bhp will decrease drasticly. So hook up an cold air intake to your oem filter box with an original airfilter and replace the filter every 7-8000 miles and you will allways enjoy your ride to the fullest,especially with and uprated chip.