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evilstib · 09-13-2010, 10:16 PM

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?

J5isalive · 09-13-2010, 10:30 PM

You drove a civic so you know exhaust......

You won't notice much noise increase from the drop in, if you do a dual cone setup you will notice much more... As far as power increases, they will be minimal unless you tune for the increased air, or until you get to the power levels where the increased air will be beneficial.

As far as drop ins...they can be had for about 50-60 buck so shop around 100 is too much.

Yes a turbo is a silencer of sorts.... but please keep in mind you don't "hear exhaust"

The reason downpipes increase noise is because they delete the cat, yes this will void your warranty if you have a picky dealer.

Boxtyp3 · 09-13-2010, 11:56 PM

If you wanna go for sound, then get a DCI. Otherwise the stock airbox is more beneficial because of the air temp in the engine bay being sucked by DCI.

luv135i · 09-14-2010, 01:02 PM

yea u can get dci from BMS for 100. Dropin is less than 60 all day long

///M1 · 09-15-2010, 08:54 AM

No need to go with K&N for $100 (it is actually cheaper through Ebay). Get the BMW drop-in, which is same manufacturer as the Macht Schnell one, except costs much cheaper. Don't get your hopes up for more noise or whoosh as it is very slight, but still maintains the closed form airbox while increasing 'breathability'.

evilstib · 09-15-2010, 10:17 PM

Quote:

Originally Posted by maxnix

Here's a clue: Filters are to remove particles from the intake air stream!

Buying an air filter for its sound is like buying tires for their color.

Oh no! Don't tell us........

Agreed, filters are to remove particles from the air stream, but how much air they let in will make a noise difference. I've used K&N and there is a sound difference.

Thx for the smarty comment though

09-13-2010, 10:16 PM	#1
evilstib Bimmer Newbie Drives: CSM N54 Prem/Comf/Sound Join Date: Aug 2010 Location: Bear's Ass Canada! (Fort Mac) Posts: 288 iTrader: (0)	135i & K&N 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?
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09-14-2010, 01:02 PM	#4
luv135i Captain Drives: White Join Date: Nov 2009 Location: GA Posts: 750 iTrader: (0) Garage List 2005 Suzuki Hayabusa [0.50] 1994 Honda Del Sol [0.50] 2004 Cadillac CTS [0.50] 2011 BMW 328I [1.50] 2010 BMW 135I [2.75]	yea u can get dci from BMS for 100. Dropin is less than 60 all day long __________________ 2010 135i AW 2011 328i AW

09-15-2010, 08:54 AM	#5
///M1 Brigadier General Drives: Many Join Date: Feb 2009 Location: 212/305 Posts: 3,077 iTrader: (0) Garage List 2011 BMW 1///M [0.00] 2008 Audi RS4 [0.00] 2000 BMW E39 M5 (sold) [0.00] 2008 BMW 135i (sold) [0.00]	No need to go with K&N for $100 (it is actually cheaper through Ebay). Get the BMW drop-in, which is same manufacturer as the Macht Schnell one, except costs much cheaper. Don't get your hopes up for more noise or whoosh as it is very slight, but still maintains the closed form airbox while increasing 'breathability'. __________________ *2011 BMW E82 1///M: AW, ZPP, ZCV, HK, Sirius, Apps; Akra CF+Valve control, MadDad mids, K&N, Forge FMIC, P3gauge, EuroTails, Tint, CF Mirrors+Spoiler+Roof Wrap, 10mm H&Rs, IND grills+gills, xCDV, LUX AE 2008 Audi B7 RS 4*: Sprint Blue, Exclusive Euro Recaro Interior, Premium+Titanium Package, EPL Tune, Stasis Ohlins MS coilovers, Milltek valved exhaust+DownPipes, Stoptech SS lines, Tint, ADR V1, Lidatek, Lamin-X, Rotiform SNA 19x10" wheels, 275/30/19 PSSs, Euro flat-bottom steering wheel, JHM SSK

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09-13-2010, 10:30 PM	#2
J5isalive Private Drives: 135i Join Date: Aug 2010 Location: Alpharetta Ga Posts: 80 iTrader: (0)	You drove a civic so you know exhaust...... You won't notice much noise increase from the drop in, if you do a dual cone setup you will notice much more... As far as power increases, they will be minimal unless you tune for the increased air, or until you get to the power levels where the increased air will be beneficial. As far as drop ins...they can be had for about 50-60 buck so shop around 100 is too much. Yes a turbo is a silencer of sorts.... but please keep in mind you don't "hear exhaust" The reason downpipes increase noise is because they delete the cat, yes this will void your warranty if you have a picky dealer.

09-13-2010, 11:56 PM	#3
Boxtyp3 Captain Drives: E82AW N54/ e92 BSM N55 Join Date: Apr 2010 Location: SF Bay Area Posts: 696 iTrader: (0) Garage List 2010 135i [0.00] 2013 E92 335i [0.00]	If you wanna go for sound, then get a DCI. Otherwise the stock airbox is more beneficial because of the air temp in the engine bay being sucked by DCI.