Originally Posted by grizz1

None of the JP pipes work particularly well on the GO engines. They run ¨sort of ok¨, but economy is not good either. The GRP 053 would be cool on the 7 Port, but again not ideally suited to a 5 Port. As to which one of of these would be most suitable, I couldn´'t say.

The best pipes for the 5 Port are

GO 0801
GO 2072
Dynamite 086