IS THIS A GOOD MOD; ARE THERE ANY PROBLEMS WITH THE POP CHARGER?

 

As far as HP gains, opinions differ. I couldn't tell that much myself.
As for sound, it gave my Z a better growl.

Inexpensive and easy modification.

Add a exhaust change or muffler, and you will definitely hear a difference.

IMO, If your wanting HP over the asthetics of sound, buy a CAI instead. If HP is not your prime motivation, then get the JWT and take your girl to dinner on the savings.

 

LoL Well said Brick