|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
100% UNDECIDED about a K&N drop in cone filter.....any thoughts?
|
|
View Poll Results: Is it worth making the swap from an OEM paper air filter to a K&N cone air filter? | |||
Yes, go for it! | 6 | 46.15% | |
No, don't bother. | 7 | 53.85% | |
Voters: 13. You may not vote on this poll |
|
Thread Tools | Search this Thread |
10-16-2012, 03:26 PM | #1 |
Private
18
Rep 84
Posts |
100% UNDECIDED about a K&N drop in cone filter.....any thoughts?
E90 2006 325i - I was planning on replacing my standard paper filter with a K&N drop in cone filter to give the engine a bit more breathability, but having read many many conflicting threads on E90post.com, now I'm not so sure!
What is the general feeling of "yeah go for it, it'll improve performance, sound great and help your engine breathe" versus "don't bother, it's not worth the money, the K&N's will allow more particulates through the filter that will go through the engine and end up in your oil as a mild abrasive" In all honesty, I'm not fussed about performance gains (an increase in MPG would be nice!) but care more about giving the engine the least restrictive air supply as possible. I quiet like some of the additional sounds from the engine bay that can be associated with a K&N but wouldn't do the swap just for that reason! Lastly, can the oil from the K&N interfere with the MAF? PLEASE VOTE! Any thoughts appreciated. Cheers, JB
__________________
PREVIOUS: 2008 E90 M3 DCT - Jerez Metallic Black
PREVIOUS: 2006 E90 325i SE - Titanium Silver - Manual |
10-16-2012, 04:03 PM | #4 |
Private
2
Rep 52
Posts |
You could always go for the BMW performance filter which to me looks like a k&n filter but you have the peace of mind of the 24 month parts guarantee if you are worried about engine damage.
Mike
__________________
2006 E90 325i M Sport SGM, BMW performance kidney grills, M3 lip spoiler, BMW performance air filter, BMW Darkline Rear Lights, H&R sport springs, Backbox delete, 18x8.5 Rota Grid Drifts in Hyper Black
|
Appreciate
0
|
10-16-2012, 04:08 PM | #5 | ||
Private
18
Rep 84
Posts |
Quote:
Quote:
Hi again Mike Yeah had noticed that the BMW Performance air intake just seems to be a K&N instead of the paper filter, and a carbon fibre cover instead of the original plastic one. Strange.
__________________
PREVIOUS: 2008 E90 M3 DCT - Jerez Metallic Black
PREVIOUS: 2006 E90 325i SE - Titanium Silver - Manual |
||
Appreciate
0
|
10-16-2012, 04:24 PM | #6 |
Private
2
Rep 52
Posts |
Hi again Mike Yeah had noticed that the BMW Performance air intake just seems to be a K&N instead of the paper filter, and a carbon fibre cover instead of the original plastic one. Strange.[/QUOTE]
Hello, it seems we want similar things from our 325's The carbon fibre bit I think has a larger opening to allow more airflow but I don't think that warrants the £700 price tag. The filter however fits the standard airbox, and cost me with my staff discount £50 and I have the knowledge that it is a genuine BMW part. Mike
__________________
2006 E90 325i M Sport SGM, BMW performance kidney grills, M3 lip spoiler, BMW performance air filter, BMW Darkline Rear Lights, H&R sport springs, Backbox delete, 18x8.5 Rota Grid Drifts in Hyper Black
|
Appreciate
0
|
10-16-2012, 04:30 PM | #7 | |
Team iTouge
121
Rep 2,101
Posts |
I personally like the k&n drop in, I do see improvements in hp (very slightly) but I do also notice a drop in mpg. Imo, I think you should. Don't over oil it or it can drip onto your MAF sensor but other than that, I say its a great upgrade in saving money versus buying a new air filter every 50k or so miles. My filter seems to catch A LOT of debris and none of which I've seen any further in than the filter itself.
__________________
Quote:
|
|
Appreciate
0
|
10-16-2012, 04:51 PM | #8 |
Lieutenant General
2288
Rep 12,565
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (99)
Garage List F15 X5 xDrive35i [8.75]
E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.24] |
A more "breathable" filter over stock won't do much anyway so I think you should stop stressing. '
In fact, I didn't even remove the charcoal filter (despite being a popular mod here) because BMW stated it could cause rough idle or worse mileage on the s54's. http://bimmerfest.com/forums/showthr...54#post2878954 |
Appreciate
0
|
10-16-2012, 05:11 PM | #9 |
Private First Class
19
Rep 144
Posts |
I'm not a car engineer or a car mechanic, but I feel like a filter that is less restrictive would improve improve mpg. Which is why a new filter that is not clogged up with gunk yields better mpg.
I can sort of buy into the rough idle aspect of deleting the carbon filter, because it takes a while for the ecu to adapt to the new amount of air it is getting. But reducing mpg's? I'd like to hear a complete explanation about how it reduces mpgs when it is removed. Using reverse logic (which is not always correct) wouldn't that mean adding a carbon filter would increase mpgs? They should add four of them to the M3, so that it can get 32 mpgs Just kidding. I think the bmw guys just don't want their sexy machines being ruined by over oiled panel filters. Note that I said over oiled not oiled. I don't want to take a stance on oiled vs non oiled, but we can all agree that over oiled is bad and that tends to happen when people recharge their filter. I don't have a euro intake wish I did I just have the stock air box, with the carbon delete, and a stock filter. When I do decide to "upgrade" I'd probably just get some cyba scoops, and an AFE ProdryS filter. Just my opinion, I'm sure they make an equivalent or better filter that is dry for you Have fun out there and be safe! Any loss in mpg imo, is gonna come from the car being driven harder because of the new sound. |
Appreciate
0
|
10-16-2012, 10:19 PM | #10 |
Brigadier General
298
Rep 4,040
Posts
Drives: 130i coupé ;)
Join Date: Nov 2011
Location: Bimmerpost
|
Those lucky enough to have the Euro box have the following options
- Stock & various cheap copies - BMW Performance filter = dry version of K&N - K&N oiled - AFE round euro version - dry or oiled- apperently better built then K&N - Pipercross - panel filter made out of foam - UK brand - BMC air filter - looks like K&N - Italian brand? Some Euro box owners in the UK have cut a hole in the right side of the box, like the Simota CF intake
__________________
128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is Last edited by andrey_gta; 10-16-2012 at 10:24 PM.. |
Appreciate
0
|
10-16-2012, 11:14 PM | #11 |
boku no namae ha...
336
Rep 11,025
Posts
Drives: 2006 BS 330i
Join Date: Feb 2006
Location: S. Bay Area, CA + Newark, NJ + ChiCity + True Blue
|
its cheap... if you want it. get it... if not...then dont.
__________________
looking for a PreLCI Black Sapphire e90 front bumper without license plate holes
"Akimbo shotguns. Broken wrists anyone? And don't give me that 'it's just a game' bull****. Where the **** are my akimbo interventions then?! One scope on each eye mother****er!!" |
Appreciate
0
|
10-18-2012, 08:24 AM | #12 | |
First Lieutenant
27
Rep 394
Posts |
Quote:
|
|
Appreciate
0
|
10-18-2012, 08:41 AM | #13 |
Private First Class
12
Rep 162
Posts |
I put mine in about 15k miles ago. I have yet to recharge mine yet but of you just clean your MAF sensor and don't over oil you'll be better of on the mpgs. I've notices mpg gains since I put mine in and charcoal deleted. Like on average 1.5 mpg more. Idk why people think that it sounds noticeably better though bc it really doesn't.
__________________
| H&R Coilovers |ApexArc-8s| M3 ControlArms | RogueTransMounts | AFEDualCone | ERChargePipe | TialBOV | ETSIntercooler | 335isClutch | BMSCatchCan | UUC EVO3 SSK | MichelinPSS | CobbAP | JB4 |
|
Appreciate
0
|
10-18-2012, 03:47 PM | #14 | ||
Private
18
Rep 84
Posts |
Thanks for the input guys, it's much appreciated!
Quote:
Quote:
Cheers all.
__________________
PREVIOUS: 2008 E90 M3 DCT - Jerez Metallic Black
PREVIOUS: 2006 E90 325i SE - Titanium Silver - Manual |
||
Appreciate
0
|
10-19-2012, 08:02 AM | #16 | |
Private
2
Rep 52
Posts |
Quote:
__________________
2006 E90 325i M Sport SGM, BMW performance kidney grills, M3 lip spoiler, BMW performance air filter, BMW Darkline Rear Lights, H&R sport springs, Backbox delete, 18x8.5 Rota Grid Drifts in Hyper Black
|
|
Appreciate
0
|
10-19-2012, 10:04 AM | #17 |
First Lieutenant
19
Rep 331
Posts |
I have the performance intake and the performance filter came with oil on the filter. I dont have the euro intake so not sure if that is different. But when i got the performance intake, the performance filter was the same filter as the K&N Filter.
__________________
New - 2013 - 320i - 15% Tint - Future Mods ( BMS Tune, Suspension, Wheels, Exhaust)
Sold - 2007 328i (3-Stage Manifold - BMW Perf Intake w/Scoops - Powerbox - Magnaflow Exhaust - MMW Headers - KW Street Comfort - VMR 701s 19' w/M3 offset - BMW Strut Brace - 330I Brake Conversation - 5% Tint All Around - 8K HID Fog Lights -Angel Eyes) |
Appreciate
0
|
Bookmarks |
|
|