I'm pretty sure that you can run a bored MAF with a JWT POP filter... Is it a correct assumption that you need to bore out the POP adapter to match the MAF???

Nope, you dont need to bore out the POP adapter, I run one, and its just fine.

hey serban, I just checked out your site and saw that you are running a JDM motor. Are you boosting with 10.0:1 compression? How much can you turn it up before ish happens?