the question is which is the best option? 3 or 5 port. in the uk we have a new gt class running 200/220 and 235mm cars all together with an open motor rule upto .15, the way i see it .15 motors are old hat now with no r&d done on them for a few years now, and having run against .15 with a 5 port .12 last year with no power issue i think its the way to go
but should i try a 3 port, the 5 port has the top end but at the cost of fuel economy, where as the 3 port has the torque with the economy.

what are your thoughts

cheers