[kern417]

Originally Posted by Phantom10R

generally they cause maf and idle issues.

I think some of you are missing that this is a B58 question. So not sure about the N55 but the Dinan intake for our cars works great.

[thejeremyman9]

Originally Posted by kern417

Read the first line of my post.

I did...

Originally Posted by kern417

Generally speaking it won't run like crap. But you will be leaving performance on the table. usually I see it causing a problem when pushing hybrid turbos, then IATs spike and cause significant issues.

I was asking if you quantified it, have datalogs, etc. I am not necessarily arguing with the statement since i have always generally opposed the "hot air intakes" but i would like to understand the basis of the statement.

[kern417]

Originally Posted by thejeremyman9

I did...



I was asking if you quantified it, have datalogs, etc. I am not necessarily arguing with the statement since i have always generally opposed the "hot air intakes" but i would like to understand the basis of the statement.

Plenty of people running into issues if you search around. It's the same reason Pure ran the stock intake on their shop car.

[AmuroRay]

Originally Posted by kern417

Plenty of people running into issues if you search around. It's the same reason Pure ran the stock intake on their shop car.

And plenty of people don't have issues - is it related to it being an OPEN intake vs just an inproperly designed MAF housing?

[Wires]

Originally Posted by Skyhigh

Yes there is.
One variant is left open in the engine bay, the other has 2-3 more air duct parts connecting it to the opening in the bumper.

There have been a few threads on that topic here. I have been contemplating to add the few plastic parts on mine and connect it but not sure how much disassembling is needed to get access.
People here have done it.

Are you sure it's wide open to the engine bay? On my car there is a baffle and a valve leading to the engine side of the airbox (below the filter). Should you ingest a bunch of snow that plugs the filter, that pulls open to save the car from stalling out, and the hot air should melt the snow so it can return to the normal air path. It's normally closed since it's unfiltered air.

My intake then has a tube to pull air from the grill as per the "hot climate package".

[freakystyly]

Assuming you're talking B58... the lower is unfiltered.

https://www.realoem.com/bmw/enUS/sho...diagId=13_1795

realoem doesn't differentiate between hot weather package for 11 Unfiltered air snorkel, it shows the piece for all B58s

Does yours have a #13 and not a #14 maybe?

[Skyhigh]

That's right. My cold climate package is missing #14 and #15 and is therefore not connected to the front bumper.

Wish there was a DIY manual or ideally a video about retrofitting those. Not sure I want to blindly disassemble around.

[thejeremyman9]

Originally Posted by kern417

Plenty of people running into issues if you search around. It's the same reason Pure ran the stock intake on their shop car.

Originally Posted by AmuroRay

And plenty of people don't have issues - is it related to it being an OPEN intake vs just an inproperly designed MAF housing?

Yeah i keep asking for more data/info to understand but not getting anywhere lol. I generally agree stock intake is best but if there are issues with aftermarket ones I would like to see why

[kern417]

Originally Posted by AmuroRay

And plenty of people don't have issues - is it related to it being an OPEN intake vs just an inproperly designed MAF housing?

Originally Posted by thejeremyman9

Yeah i keep asking for more data/info to understand but not getting anywhere lol. I generally agree stock intake is best but if there are issues with aftermarket ones I would like to see why

Don't know what to tell you guys. Search. I have multiple people I've helped improve their car's performance and consistency by ditching the likes of a BMS intake for something like MST or Dinan. Again, you can ask any tuner if you're truly interested. The people not having issues are probably below 600whp. You're barely pushing it at that point.

If you still question my my awareness, feel free to look through my IAT thread. Btw, I recommend doing more than single gear pulls to get any real answers from your testing.

https://f30.bimmerpost.com/forums/sh....php?t=1717248

[thejeremyman9]

Originally Posted by kern417

Don't know what to tell you guys. Search. I have multiple people I've helped improve their car's performance and consistency by ditching the likes of a BMS intake for something like MST or Dinan. Again, you can ask any tuner if you're truly interested. The people not having issues are probably below 600whp. You're barely pushing it at that point.

If you still question my my awareness, feel free to look through my IAT thread. Btw, I recommend doing more than single gear pulls to get any real answers from your testing.

https://f30.bimmerpost.com/forums/sh....php?t=1717248

Thanks for the link. To be clear, I'm not questioning what you are saying; Ive seen your testing/contributions on B58 (although i mostly focus on N55 since that's what i drive). Much like you, i have also helped many people, but with N55s. I was just asking for your basis/data/testing/etc so i can look at it myself. BMS isnt good on N55 either

I do more than single gear pulls as well. When i was testing race IC vs 5'' stepped, i did multi gear pulls including a 0-150 mph pull. I know a single gear pull isnt enough to really test an IC, IAT control, or similar, where you need more than a few seconds of WOT.

[kern417]

Originally Posted by thejeremyman9

Thanks for the link. To be clear, I'm not questioning what you are saying; Ive seen your testing/contributions on B58 (although i mostly focus on N55 since that's what i drive). Much like you, i have also helped many people, but with N55s. I was just asking for your basis/data/testing/etc so i can look at it myself. BMS isnt good on N55 either

I do more than single gear pulls as well. When i was testing race IC vs 5'' stepped, i did multi gear pulls including a 0-150 mph pull. I know a single gear pull isnt enough to really test an IC, IAT control, or similar, where you need more than a few seconds of WOT.

What happens is when you're pushing north of 28psi or even 30+ on a hybrid, you'll get timing pull even with full e85. Swapping back to a closed box intake fixes it. Everybody talks about wgdc improvements with an aftermarket intake but quicker spool doesn't matter if the car is breaking up. PureTurbos EU posted dynos with multiple intakes to illustrate why they kept the stock airbox with an aftermarket panel filter on their 700whp m140i shop car. So the data is out there.

[Salty B.]

Originally Posted by Phantom10R

itll be okay, avoid bms and dinan

Why?

I just removed a BMS from my car only because the sound became tiresome. PHWEEEEEEeeeeee PEWWWF with every fucking shift.

Sounds like someone with really bad allergies. I only want to hear the engine and exhaust, not a compressor.

[Skyhigh]

I for one have never understood the "sound" which everyone is after with these intakes. Never appealed to me.
But have stopped trying to understand it as well, whatever rocks your boat.

[thejeremyman9]

Originally Posted by Flying Badger

Why?

I just removed a BMS from my car only because the sound became tiresome. PHWEEEEEEeeeeee PEWWWF with every fucking shift.

Sounds like someone with really bad allergies. I only want to hear the engine and exhaust, not a compressor.

Note this thread is about B58 but it looks like you have a N55, for the N55 the BMS is one of the most common intakes to throw a CEL, cause rough idle, etc, mostly due to design around the MAF.

[Salty B.]

Originally Posted by thejeremyman9

Note this thread is about B58 but it looks like you have a N55, for the N55 the BMS is one of the most common intakes to throw a CEL, cause rough idle, etc, mostly due to design around the MAF.

I didn't experience those issues aside from occasional hesitation. I just got tired of the sound.

I read your lengthly comparison of intakes, and that plus the incessant whine had me put the MPPK intake back in. Happy now.