370z vs G50
 

How come the difference of 332 to 328 H.P. Is it in the tuning or exhaust. just asking. That is a small difference for same engine. Anyone?

One was tested on a mustang dyno and the other was tested on a dynojet dyno? lol


:D

Most likely they made the exhaust quieter for the G, so it lost a couple of hp.

This.

Although, it is also possible there's a slight variation in the tune too -- most likely just the exhaust, tho.

I believe they have a slightly different Y-pipe... can someone confirm this?

My take is no matter what exhaust or intake, they're pretty much making identical power. But when the marketing department decides what horsepower number to publish, they give the Z 332 horses and the G 328.