[chenry]

Originally Posted by josehb

Wondering why does the similar MST system list the power gains as 15 to 20 compare to only 9 with this one and the price is similar.

https://x-ph.com/mst-performance-bmw...nt=Catch%20All

Any stated power gains on an intake (just like an exhaust) are going to be within a dyno's margin of error (same dyno different day, one dyno vs another etc..)

Exhaust and intakes on the M340 are really just for sound and/or appearance, there is little to no power to be had.

Hope this helps