[houtan]

Originally Posted by davidwarren

I got the ducts from Pegasus.
https://www.pegasusautoracing.com/pr...YoFRoCaLvw_wcB

In the photo is 2.25 ducting, but the NACA duct takes 2.5. Just ordered some from Spruce.

http://www.aircraftspruce.com/pages/ep/ducting/scat.php

The funny thing is, if you look at the stock underbody tray (at least on an e90), there are little triangular shapes already in the panel. That is the ONLY place the NACA ducts will fit.

Ducts look good. Do you have any additional info you could share on your oil cooler install? Cooler model, how you made the bracket, and oil lines?