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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Dinan Carbon Fiber Cold Air Intake

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      04-26-2015, 04:13 PM   #1
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Dinan Carbon Fiber Cold Air Intake

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Here's another Dinan product for the M235i. I'm thinking of getting this.

http://www.dinancars.com/product/d76...ries&mid=1183/
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      04-26-2015, 06:08 PM   #2
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Sounds interesting. Thanks for the post.
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      04-27-2015, 04:43 PM   #3
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Will this generate error codes (like the BMS intake) if no tuning/remapping is done to car?
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      04-27-2015, 05:03 PM   #4
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Quote:
Originally Posted by BWT
Will this generate error codes if no tuning/remapping is done to car? I read somewhere that the BMS intake does result in error codes if car is not tuned.
Shouldn't be... The only way I know of getting a CEL w/ intake is if you messed up with a connection of one of the sensors and it's not connected properly.
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      04-27-2015, 07:00 PM   #5
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Quote:
Originally Posted by skitsos View Post
Shouldn't be... The only way I know of getting a CEL w/ intake is if you messed up with a connection of one of the sensors and it's not connected properly.
Not sure about the Dinan, but several have gotten CEL with BMS intake. I had one on my X3 and it sometimes threw CEL. From what I've read it's pretty much a BMS issue and I think they've got some spacer or something as workaround, but it's not necessarily just a user error connection issue as almost impossible to screw up intake install, sometimes it's a manufacturing issue.
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      04-27-2015, 11:24 PM   #6
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I somehow think that most of the cost of this is due to the apparent CF tube portion. The rest looks like an AFE conical high flow filter. In which case, this should have the same noise increase as noted with the BMS and AFE CAIs. Without changing the air flow into the box, I miss how these increase air flow over the drop in versions. Especially the covered ones like Dinan. The open version I can sort of understand (more air from surrounding areas), but not when it is sealed like the OEM box.
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      04-28-2015, 10:55 AM   #7
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I promise this will not throw any codes. If it does take it back to the dealer.
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      04-28-2015, 01:18 PM   #8
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Finally another mod from Dinan. I already the Dinantronics installed on my car. I wonder if this is a simple plug and play or does the car get re-tuned when the CAI is installed? anyone know?
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      04-28-2015, 01:38 PM   #9
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Quote:
Originally Posted by BLK235iNJ View Post
Finally another mod from Dinan. I already the Dinantronics installed on my car. I wonder if this is a simple plug and play or does the car get re-tuned when the CAI is installed? anyone know?
http://www.2addicts.com/forums/showthread.php?t=1115931
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      04-28-2015, 02:01 PM   #10
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I am definitely getting this!
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      04-28-2015, 06:12 PM   #11
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I just can't bring myself to spend 600 on a intake.
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      04-28-2015, 07:25 PM   #12
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Quote:
Originally Posted by boost82 View Post
I just can't bring myself to spend 600 on a intake.
Most of the other ones are 300-500 anyways. The only exception I think was the BMS intake, which would set of CELs because the plastic sleeve would warp.

People regularly spend upwards of 700-1000 on exhausts that do little else but sound. Besides, if you catch them in a sale when they are 20% off etc, its not that terrible.
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      04-28-2015, 11:07 PM   #13
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Quote:
Originally Posted by Luftwaffe1O1
Quote:
Originally Posted by boost82 View Post
I just can't bring myself to spend 600 on a intake.
Most of the other ones are 300-500 anyways. The only exception I think was the BMS intake, which would set of CELs because the plastic sleeve would warp.

People regularly spend upwards of 700-1000 on exhausts that do little else but sound. Besides, if you catch them in a sale when they are 20% off etc, its not that terrible.
+1
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      04-28-2015, 11:21 PM   #14
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Here's to hoping Dinan has a sale for May...
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      04-29-2015, 06:24 PM   #15
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Quote:
Originally Posted by alz0rz View Post
Here's to hoping Dinan has a sale for May...
+1 does this typically happen during this time of year? If so I would order immediately.

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      04-29-2015, 07:25 PM   #16
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Intake looks awesome !! Cant wait to see back to back results
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      05-27-2015, 11:43 AM   #17
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Ordered mine at the end of April, and supposed to be here this Friday!

I'll be installing it this weekend.
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      05-27-2015, 02:55 PM   #18
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Quote:
Originally Posted by hoppy6698 View Post
I somehow think that most of the cost of this is due to the apparent CF tube portion. The rest looks like an AFE conical high flow filter. In which case, this should have the same noise increase as noted with the BMS and AFE CAIs. Without changing the air flow into the box, I miss how these increase air flow over the drop in versions. Especially the covered ones like Dinan. The open version I can sort of understand (more air from surrounding areas), but not when it is sealed like the OEM box.
From what i gather, its more to do with the surface area of the filter being the bottleneck as opposed to whether the box is open or not - more air than is required still comes through the intake.
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      05-30-2015, 01:49 PM   #19
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Installed the AI earlier this morning. I took my time and completed it in just under 2 hours, but it's probably do-able in about an hour. I had to learn how to use a rivet gun, so that slowed me down a bit.

Instructions were pretty decent, but not great. At some points during the install, I had to "feel" around inside the tube (relative to the air box) to make sure I got solid contact before final assembly.

Also, no error codes (so far).

Dave
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      05-30-2015, 02:03 PM   #20
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very nice, looks great. I take it you did not have to use the template and do any cutting to the bottom portion of stock airbox.

Are you running the dinan piggy back and which stage or just the CAI with no tune, or someone else's tune?

Notice any difference sound/drive?
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      05-30-2015, 04:14 PM   #21
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Quote:
Originally Posted by G-Mann View Post
very nice, looks great. I take it you did not have to use the template and do any cutting to the bottom portion of stock airbox.

Are you running the dinan piggy back and which stage or just the CAI with no tune, or someone else's tune?

Notice any difference sound/drive?
Thanks. Definitely no cutting anywhere in the airbox, BUT I did have to install the supplied metal plate cover (that's where the rivets came into play). This is because my model was a "cold weather" version and there was a "snow valve" (see page 6 from the Dinan installation pdf). When you remove this plastic valve cover, you have to rivet a metal plate in its place (included in the install kit). Not difficult, but had to learn how to use a rivet tool as I said.

I'm not running any tunes, strictly the AI. It's claimed to add 10hp and 15tq, but to be perfectly honest, I didn't notice and have no way of verifying. Maybe it's there, but must be pretty subtle.

I did notice a change in sound (I had the MPE installed at the port), but again nothing major really. A little more throaty, even in addition to the MPE.

EDIT: the filter is oiled (at the factory) and is good for around 20k miles. Apparently you can clean it and re-oil, but would seem to me it would be quicker & easier just to replace. The replacement filters are $89. Also, Scott at Dinan was very helpful. I think he must've answered about a dozen questions I had.
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      05-30-2015, 05:06 PM   #22
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Quote:
Originally Posted by BMWZ4 View Post
Thanks. Definitely no cutting anywhere in the airbox, BUT I did have to install the supplied metal plate cover (that's where the rivets came into play). This is because my model was a "cold weather" version and there was a "snow valve" (see page 6 from the Dinan installation pdf). When you remove this plastic valve cover, you have to rivet a metal plate in its place (included in the install kit). Not difficult, but had to learn how to use a rivet tool as I said.

I'm not running any tunes, strictly the AI. It's claimed to add 10hp and 15tq, but to be perfectly honest, I didn't notice and have no way of verifying. Maybe it's there, but must be pretty subtle.

I did notice a change in sound (I had the MPE installed at the port), but again nothing major really. A little more throaty, even in addition to the MPE.

EDIT: the filter is oiled (at the factory) and is good for around 20k miles. Apparently you can clean it and re-oil, but would seem to me it would be quicker & easier just to replace. The replacement filters are $89. Also, Scott at Dinan was very helpful. I think he must've answered about a dozen questions I had.
Depends on how often they recommend cleaning them, every 5k seems to be a good standard. I'd be tempted to buy a spare filter, clean and alternate them out every 5k miles and then no down time waiting on a filter to dry.

Awesome feedback, thx.
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