I am coming to the conclusion that the engine mounted airbox is not just bad, but really bad.

It sits on top of the engine soaking up heat and the volume is very small which is not what you want for your engine.

I would guess the engine losses 6-10Hp from the lack of volume and torturous path the air must travel to exit the airbox.

Can someone look up the part numbers for the air snorkel that connects to the manifold nad comes out and around the side, like what Kleemann uses on thier supercharger stuff.

A larger smooth tube with an airbox like J Irwins with the air inlet coming off the fog light might be the Hp ticket.

However the sytem must be airtight from the pickup at the foglight to the manifold.

Jeff