K&N on 135i
Anyone have the K&N drop in filter on their 135i?
How's it sound? I can get one locally for $100...Any sound increase?
Any other ideas?
I'd like a bit louder sound on the car. I've done the Dinan Stage 2 already. Sounds nice, but still a bit quiet.
I notice on most of the exhaust systems that you mostly hear 'engine' out the tail pipe and not 'exhaust' (I used to drive a civic...I know exhaust ;P )
Is this the turbos that silence it? I notice that downpipes increase the 'exhaust' noise a lot (cat delete), but I'll most likely void warranty (posts on turbo spool & boost creep..etc.)
How can I make that beautiful noise louder without any warranty problems?