New S50 Carbon Fiber airbox with internal filters.
by JB0352
I got word from John (S14power.com) in Germany that he has modified their S50 airboxes to have an internal air filter, much like the CSL box for the S54. (E46 M3)
This is great news for those that have dropped one in an E30. There isn’t much room to install a filter on the end of my intake due to the limited space caused by the ABS unit and Larger PWR radiator.
The only negative to these is that you don’t see the intake trumpets as well since they are hidden. This is probably necessary because of the internal filter. Still looks sick though!
John’s boxes are some of the best in the business and he’s a great guy to work with, so don’t hesitate to purchase from him.
Here are the pics and link to pricing for this and other boxes as well:
If you haven't already figured it out, my name is Joey and this site is dedicated to my 1989 E30 M3. I've owned an E30 since 1995 and absolutely adore the body style. Not only will I share photos and video from different events that I attend, but I'll also keep everyone updated on my project cars. 
Beautiful work
Can you modify this airbox to save the brake booster of an E30 swap?
Francesc,
I would never modify the airbox to accommodate the brake booster. There are several options out there that fit, you just need to look around. The last thing you want to do is starve a cylinder of proper airflow when there is another solution.
The link to pricing is dead, any update on pricing? These look great! I couldn’t find this version on s14power.com anywhere.
David,
You can find this box in the “Parts” section on S14power.com
http://s14power.com/
-Joey
Thanks!
Hi can you say me where can i go to buy this airbox?
i´m too interested
The “parts” section of s14power not work