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Drop in Filter... any measured comparisions vs stock?
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| 06-05-2011, 11:56 PM | #1 |
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Drop in Filter... any measured comparisions vs stock?
Did some searching and found a bunch of threads on CAI vs Stock vs DCI, but wasn't able to find much in the way of measurable results of a drop in filter vs stock. Anyone find a measurable difference with a drop in?
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| 06-06-2011, 12:14 AM | #2 |
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not really gonna feel it but it does help the car breath
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| 06-06-2011, 12:28 AM | #3 |
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| 06-06-2011, 01:07 AM | #4 |
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Drives: E90 335i LCI
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i had one before and it does make the car breathe better. no noticeable power gains (at least not through butt dyno). there is definitely a louder induction noise. a "sucking", "wooshing" noise can be heard when car is under load; part throttle.
power gains are extremely minimal, you would buy this so the car can breathe better and for a slight sound increase. DCI just takes the sound to a whole new level.
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| 06-06-2011, 01:46 AM | #5 |
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| 06-06-2011, 02:11 AM | #6 |
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>>>
I did a before and after dyno with the stock filter, k&n and then no filter and there no major advantage to the k &n over stock. It gaind a couple hp in some areas and lost in others. I put that down to normal variations between runs.
No filter gave me a decent bump up top. On an avg of 7 to 9 hp but the powwr curve became wavy. Obviously imo its not worth it. Since i had the k &n i just left it in. Harry |
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| 06-06-2011, 03:08 AM | #7 |
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I have the k&n also. i think it's worth it.
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 08 BMW BSM 335i 6MT (Sports, Premium, NAV, PDC, AS, IPOD, HD Radio, Rear Sunshade, OEM Alarm) Angel iBright V3, Luminics Fog Bulb, Turbo Tuner, K&N Drop in Filter, Dinan Exhaust, Dinan Pedals, Vorsteiner CF Front Lip, and CF Rear Diffuser. Ordered:08/25/07 Started: 09/09/07 Finished: 09/14/07 On Ship: 09/15/07 Arrived: 10/08/07 Delivered: 10/10/07 |
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| 06-06-2011, 08:46 AM | #8 | |
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Quote:
Since I'm not interested in adding anything on the sound side and am just looking for power gains, I guess I'll just keep the stock filter really clean with my shop vac until I can figure out what CAI to go with. The Mr 5. type DIY is looking temping for sure... |
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