[Bmw doubles]

I also think this is a necessary mod if you're running a tune, timing has been advanced and your running hotter. Any cooling you can get wether it be a oil, meth injection, e85, a real CAI, FMIC or DEI wrapping should be considered.

Here's a nice little blog on the BMS oil bypass http://oppositelock.kinja.com/my-tho...ass-1687405218

Using the stock valve mod doesn't allow for 100% bypass and thus making it a very good street application for those of us running higher boost.