Bimmerfest - BMW Forums - View Single Post - Benefits of Ram Air Intake?
View Single Post
Old 01-11-2013, 09:20 AM
LarkHouston LarkHouston is offline
Doing the best I can
Location: Just another day in Paradise
Join Date: Aug 2009
Posts: 1,122
Mein Auto: 2013 Porsche Boxster S
Originally Posted by DT335 View Post
I'm looking to put in something to improve airflow in my '08 E90 335i.

I really like RPi's Ram Air Induction V3 found here. I was wondering if you guys could provide any insight as to whether or not it'd be beneficial to my car, i.e. improve air flow, help with cooling, differences in idle'ing (if any).. This would be one of my first DIY projects on this car, so I'm really looking forward to it if it's worth pursuing.

If these have any benefit, it is only at speed. Does nothing for idle, does nothing for cooling. Their function is simply to "scoop" more air while driving at speed. As you can see the claimed HP increase is with a fan. And that claim is on an M3, which is NA. My feeling is that on a turbo engine like the 335, you'll have little if any noticeble difference. As you can see I have it on my Z, which is NA. And I got them for a lot cheaper than that price.

2015 Audi SQ5
Recent Past:
2013 Porsche Boxster S
2009 335i Coupe Dinan S3
2006 BMW Z4
Reply With Quote