My car was recently tuned...the car performs great under boost, but I noticed at highway speeds around 80 or whenever things just even out wtih out giving much gas there is a miss, kinda weird. So I changed the plugs, the wires and the external coil wire as well. But it doesn't miss under boost. What is this? BTW it is tuned with hondata.

 

I too have been recently tuned to 15 psi and have the same issue....very random miss, like a little stutter and then it drives fine like nothing happened. I'm going to start with plugs and wires. Did those make a difference when you changed plugs and wires?

I thought maybe the MSD-6 box was the problem, but I don't know how to diagnose. Also, could it be a ground somewhere???