2008 M35 intake options

[dyoshii]

I'm looking to get the Stillen intake set up like on the link below

http://www.stillen.com/product/intake-k ... -8705.html

Has anybody here tried it, I'm concerned on the fit of the filter housing.

[Larz]

Welcome to NICO !
First, I should tell you that our M's have a history with K&N filters that is not very good. These filters can let loose tiny droplets of oil that get stuck on the MAF sensor and cause troubles. Second, every time an independent shop tests for a difference in performance with / without the CAI they find little or no changes in spite of the claims made by the adverts.
Seems its lots of money for just appearance, and who sees the intake on your car anyway?
If you do a search for 'intake' you will see numerous discussions about CAI set-ups. One interesting thing is that some members have replaced JUST the OEM tube with a Ztube and have reported good results.
Here is one of the more recent threads about CAIs:

cold-air-intakes-cai-mythbusted-mcm-vid ... lit=intake

[dyoshii]

Thanks for the info Lars, Very interesting stuff. I might consider going CAI instead.

Anybody know if there is anybody else out there besides Injen making CAI units for the M's?

[Ilya]

CAI's aren't much better. Strictly for looks. They heat soak often times and rob power.

You're better of getting a Z-Tube, using the stock airbox, and a good quality paper filter.