[john boxter]

hey guys ive read this other thread about dci and saw that they are completely useless as a matter of fact they take power away after one or two pulls so what about the drop in filter?

http://www.e90post.com/forums/showth...ake+power+loss

[SV Concepts III]

Drop in filters are a good choice if it is time to replace the intake. They won't make a night and day difference but are worth it over the OEM if it needs replacement.

[MFKN3]

Get DCI and upgraded FMIC.

DCI really comes to the party after you >360whp

[john boxter]

ya but after the first pull you loose power dont you? look at the link

[orionredwing]

i bought the dci as I love the look but haven't installed it due to the heatsoak issues, plus I also like being a sleeper. Why is dci critical at >360hp? Does the greater airflow really offset the heatsoak loss at that point?

Originally Posted by xsboost

Get DCI and upgraded FMIC.

DCI really comes to the party after you >360whp

[cstavaru]

Its obvious that the engine shouldn't suck air from the hot engine bay. Find other solutions. Period.

[PaulBailey@ltbmw]

CAI
or DCI with vented hood

[john boxter]

can someone tell me how the drop in filter works? and is there no heat soak associate with it at all?

[dr.roro]

Originally Posted by john boxter

can someone tell me how the drop in filter works? and is there no heat soak associate with it at all?

It's just a replacement air filter for the stock airbox. Therefore, you're still drawing in cold air from the front. Supposedly the aftermarket ones are more free-flowing, but don't expect any real significant gains in power. Having a clean filter is probably the more important factor if you're going to keep the stock airbox.

[645Nm]

John, don't waste your money. Go for a good dropin filter (BMS/K&N whatever your fancy); get a good intercooler and stay with it...my DCIs and Single cone intakes are white elephants in my garage museum...!

And if you worried about power...put on your DCIs and i will race you with my drop-ins... and you can see the filters hop down the road

[Former_Boosted_IS]

I am willing to bet at boost above 13 psi that your drop-in will not keep up to the STETT CAI. I don't want to get heavily involved in the debate, but the CAI does not suffer from soak as my testing has shown.

There is a reason that every single one of the highest hp N54s are not on the stock box.

[mylydiamy]

Originally Posted by cstavaru

Its obvious that the engine shouldn't suck air from the hot engine bay. Find other solutions. Period.

++++++++++++++++++++100000000000000000000000 unless you want to waste your money and loose power

[645Nm]

Originally Posted by Former_Boosted_IS

I am willing to bet at boost above 13 psi that your drop-in will not keep up to the STETT CAI. I don't want to get heavily involved in the debate, but the CAI does not suffer from soak as my testing has shown.

There is a reason that every single one of the highest hp N54s are not on the stock box.

Point taken.
I reverted back to the dropin after my own extensive dyno testing on different days on different maps, boosting 15psi on the bms gauge with the BMS dual cones and the K&N dropin. My car performed consistently better with the dropin filter. The only thing i miss about the dual cones is the sound.

[Former_Boosted_IS]

Originally Posted by 645Nm

Point taken.
I reverted back to the dropin after my own extensive dyno testing on different days on different maps, boosting 15psi on the bms gauge with the BMS dual cones and the K&N dropin. My car performed consistently better with the dropin filter. The only thing i miss about the dual cones is the sound.

In the perfect world, people should get upgrade the intake and intercooler together. A lot of the heat problems on this car originate from the very poor performance of the stock intercooler on the N54.

[645Nm]

former boosted are you in the US? What time is it there? i normally have to wait for another 5 hours before the US gets online and then its time for me to sleep.

[flem]

it's noon here...

[jeffc31337]

Originally Posted by flem

it's noon here...

Seems to me it's about time that someone makes a fully enclosed box that mates up to the airdam on the front of the car that contains a cone or two...

Best of all worlds. More flow and same quality of cool air a stock.

[flem]

Originally Posted by jeffc31337

Seems to me it's about time that someone makes a fully enclosed box that mates up to the airdam on the front of the car that contains a cone or two...

Best of all worlds. More flow and same quality of cool air a stock.

Something like Gruppe M's design:

http://gruppem.co.jp/matching/produc...?goods_id=1375

[Mike@N54Tuning.com]

Originally Posted by john boxter

hey guys ive read this other thread about dci and saw that they are completely useless as a matter of fact they take power away after one or two pulls so what about the drop in filter?

http://www.e90post.com/forums/showth...ake+power+loss

Those results showed a pretty massive gain with the DCI, but here is some recent customer drop in filter testing. Helene vs. BMS vs. no lid (like a DCI).


.

[645Nm]

Its 7pm my end and time to put my son through his reading lessons and prepare clothes and stuff for school tomorrow. sort out the dog etc. hectic stuff.

I also thought the gruppe design is what i would consider but then bmw brought out a "perfomance" airbox for the 330 and i thought maybe there is one in the pipe line for the 335...so still un deciding

[alq80]

Originally Posted by xPaulBaiLeyx

CAI
or DCI with vented hood

how about rain and the vented hood? would water get into the intakes and maybe damage something?

[rmdvrs]

Go for the BMS drop in filter. It's really high quality, good price and does improve performance. I will have a review up shortly