E30 Zone

are the cone filters worth putting on, also does the MPG get affected.

Complete waste Ata, suck hot air in, create flatspots and your engine becomes less responsive.

MPG will probably be worse i would imagine???

BMW airbox is the best, it has been proven too

Some say yes, some say no so from that I'd deduce that it'll be pretty negligible difference if any so in my opinion not worth it. No idea about the MPG but putting anything other than OE stuff on a car runs the risk of impacting the way it was designed to work...

That's that sorted ,back on the shelf

I've seen a wee difference since I added a K&N panel filter to the cabby. I'd recommend that.

me too! id recommend useing a k+n panel filter. that way you stick to a stock air box with cold air feed.

i had a pipercross panel filter, it did absolutly nothing so i sold it and got £20 for it

Brianmoore recons the panel filters dont filter properly and let crap get into the engine? not sure how true this is but he is rarely wrong

the panel filters are good as long as they are oiled properly and cleaned out from time to time.
i have used k+N panel filters on all of my road cars so far and have never experienced any problems.

ad recommend it to ata, i had them on my range rover and 2 other cars saw an improvement as for fuel economy was unsure with rising fuel costs all time couldnt bother workin it out cant be that bad tho can it

panel filter yes....... cone filter definate no!! waste of atleast 10lb ft,, this was in the tunning guide in performance bmw mag few months back, stick to tha bmw airbox because as soon as you loose the trumpet in there thats bye bye torques!!

I'm swapping my K&N cone for a panel as soon as I find the fittings for my airbox again! The power band on my 320 is shocking - nothing up to 3.5k, everything from 3.5-5k, then nothing again! Was much smoother with the standard panel in.

But the noise is pretty lush...