Any one running a 180 hp RV4 with circular (sam james) air inlets?
The kit comes with medium sized inlet rings (4 3/8") but I'm considering the larger ones 5 1/4" for more cooling. My engine is slightly more than 180 hp.
Not a 4, but my Rocket cools "too well" with less than 5" diameter inlets. I routinely fly in 110+ degree OAT and I dyno'd at way over 300 HP. I also have less than 27 inches of cowl exit area.