10-07-2019, 11:55 AM | #1 |
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OEM or BMS intake
What has better performance on b58 340i ?
OEM intake or BMS intake ? I live in San Diego btw I'm sure that effects the answer |
10-07-2019, 12:11 PM | #2 |
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The power gains are minimal at stock power levels but as you tune it you'll get more power with the intake, and it sounds great. I don't think any B58 intake is CARB approved for California though.
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10-07-2019, 12:46 PM | #4 |
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Stock is better for performance. The best upgrade that I've seen is the Dinan intake with a big cone filter in a bigger enclosed box, but it's too expensive imo.
Cooler air is more important than less restriction in terms of power and reliability. |
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10-07-2019, 12:50 PM | #5 |
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Someone made a point in another thread that was a good one. Dyno runs with an open hood can hide the benefits of maintaining an enclosed system. Draggy times would be more informative (or doing dyno runs with the hood closed, though not really recommended).
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10-07-2019, 07:48 PM | #9 |
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I have an N55 and went with a closed style intake just because I don't like the idea of it sucking hot air from the engine bay. on turbo cars I have read that it doesn't really matter because of the intercooler or heat exchanger taking care of the higher temps that wouldn't exceed what is coming from the hot ass turbo/exhaust gasses anyway. and although I didn't notice more power, I did notice quicker throttle response and a bit more sound.
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10-08-2019, 10:34 AM | #10 |
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AC Fabrication posted dynos that showed open air intakes making 5-10 HP increase on this car
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10-08-2019, 11:17 AM | #11 | |
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I'm also happy with BMS. Easy installation and nice sound! No codes.
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10-09-2019, 10:02 AM | #12 | |
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10-09-2019, 04:17 PM | #13 |
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I ran the BMS for a while and if you want more intake noise with an easy install it's great. I'm back to a stock drop in now. I'd give it a go - maybe by a used one you can always sell it if it's not for you
For reference MP runs stock airbox and filter with all their cars and all their dyno runs. |
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10-09-2019, 09:28 PM | #15 |
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How are you liking the Arma?
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10-09-2019, 11:06 PM | #16 |
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10-10-2019, 08:56 AM | #17 |
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That design is really cool. It really focuses on the key: maximizing surface area in an enclosed box. I just think the K&N ripples compensate for the same thing. That's probably why there wasn't a big difference.
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10-10-2019, 12:30 PM | #18 |
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10-10-2019, 01:20 PM | #19 |
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No, but you could go on their website and search. It's kind of hard to find.
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10-10-2019, 03:43 PM | #20 |
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10-12-2019, 10:48 PM | #21 | |
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10-18-2019, 12:44 PM | #22 |
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I just ordered the Agency Power because I want as much sound increase as possible.
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