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      09-23-2018, 10:35 PM   #23
Maverik259
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Paid like 1600 for it. Don't remember. Got a slight discount as an early adopter. Think I was the second set on the chassis. Out of all the mods and money spent on the car this and the KW were the best money spent

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How much did u pay for the rk intakes
Damn kinda pricy for intakes might just go with DINAN it's around 1200
Lol yup. Even the dinan isn't worth the $1100. All you're paying for is the CF not performance.
Not necessarily true. I forget the name of the thread here, but someone put the Dinan on a flowbench and has hard numbers that it flows significantly more than stock. 571 vs 451 CFM difference. So in a pair, that's 1142 vs 902 CFM (nearly 20% difference). Now that isn't to say there's a huge performance gain, but it's data to show that Dinan is more than just CF.

I don't think he put RK on the flowbench as he doesn't have any to test...

https://f15.bimmerpost.com/forums/sh...ight=flowbench
First yes I'm well aware of that thread and have posted in it many times and if I'm not mistaken I'm actually the last person to post in it so thanks.... second please look up the definition of an exaggeration. I'm well aware that the filters are larger and technically flow more air than oem. That's the nature of them being larger.

But again for like the 3rd time, I'm simply saying the performance gain is quite minimal and the $1200 is thus mostly for the CF dressing vs performance change. And the RK is even worse in that respect although much better looking IMO.

This whole discussion should just be your budget. If you can afford to drop over $2k for the RK then do it. It's closer to a "cold air intake" as you're gonna get. If you can't and must have an intake for the "sound" then dinan is your only other option for $1200 for 2 filters and a new top to the oem air box that's simply taller to fit the larger filters and made of CF.

I'm out cuz this is getting too lost in translation. GL OP! Sorry to confuse everyone.
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      10-01-2018, 01:48 PM   #24
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Is it possible to use the Dinan filters with the stock box? The CF cover seems like a waste of $1,000.00 - the filters by themselves are $250.00.
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      10-01-2018, 03:18 PM   #25
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Is it possible to use the Dinan filters with the stock box? The CF cover seems like a waste of $1,000.00 - the filters by themselves are $250.00.
No. Not enough room.
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      10-01-2018, 03:41 PM   #26
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No. Not enough room.
The more I read about this the more it sounds like the BMW design is 'good enough'. It doesn't look like any sizable impact with the Dinan product at all. And, even the current filters being swapped doesnt look like much impact either - looks like BMC makes a version (K&N doesnt).

Even with an exhaust and stage 1 tune, the stock item might do the trick - just want to be sure Im not missing something.
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      10-02-2018, 01:56 AM   #27
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Go with the BMC's. I run them on my E70 X5M. Perfect for the price point.
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      10-02-2018, 01:04 PM   #28
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No. Not enough room.
The more I read about this the more it sounds like the BMW design is 'good enough'. It doesn't look like any sizable impact with the Dinan product at all. And, even the current filters being swapped doesnt look like much impact either - looks like BMC makes a version (K&N doesnt).

Even with an exhaust and stage 1 tune, the stock item might do the trick - just want to be sure Im not missing something.
Both BMS and K&N make a set but both are smaller than the F85. They are actually the same size as the F15 which is why I went with OEM F85 over them for my 50i
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      10-02-2018, 01:36 PM   #29
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Both BMS and K&N make a set but both are smaller than the F85. They are actually the same size as the F15 which is why I went with OEM F85 over them for my 50i
Thats exactly what had me scratching my head too...the surface area on the K&N and BMC is smaller than OEM. And, they dont provide any CFM information for either like they do with some of their other filter applications - my take is that there isnt a gain by moving to these filters from the F85 stock system.
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