Yes I have a couple of 06' air boxes , once my UK car is ready to go , I will try one out.
But if you have a remap I am sure you get a few more ponies.
Reason I ask about number of runs as we find the 1/2nd runs will show a gain then the car will not allow car to run with full map figures i.e timing degree,s figures. You see dyno figures a fair bit down on the 1/2nd runs , your find your need 6/8 runs to get a proper figure on a dyno.
Mark
I plan to get an Uprev remap done once I've installed the high flow cats, MD plenum spacer and possibly a MREV2 as well.
I saw the guy from Motordyne saying something similar to you about the dyno thing on My350z.com. He was getting variations as much as 10BHP without changing anything. It seems that the ECU is a law unto itself really without a proper remap.
I've pretty much assumed that any gains I've seen on the dyno are going to be slowly taken back by the girly ECU although at the moment it still feels punchier than before, especially at motorway speeds.
Mrev2 is for revup engines not DE