"Heat Soak" seems to be very much overrated on this forum. I've had 5 or 6 different air filter styles other than standard across my 3 years of Z ownership, everything from an uprated panel filter (K&N) to at least 4 different types of cone filter (Japspeed cone[for about 2 weeks, don't murder me! ], BMC CDA, HKS Mushroom filter and an Apexi Cone) have I noticed any difference in any of them other than noise? Not really. Has heat soak been a huge engine killing problem? Haven't had any issues, not even at track days on hot summer afternoons. Personally I'd rather have good filtering than .5 of a horsepower extra.
What about dyno tests that show stock air filter box yields more power than the short ram air intakes?
I'm just curious, read a few threads about this on the yank forums.
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