|
The PZ30 is a tapered bore with a choke plate so it basically its a restricted intake velocity.
The Nibbi being a smooth bore has less restriction which means greater air volume potential at a reduced velocity..
the issue being 200cc is not enough suck to make use of the PE30 smoothbore resulting in velocity drop and poor A/F tune.
the PE28 is still 'bigger' than the PZ30... even if the nominal exit hole diameter suggests otherwise.
at 300cc/20hp the PE30 starts to make sense.
|