Im running one now but has anyone ever measure the neckdown part in the resonators
Im curious how small it actually is and how bad is it really going to make me lose power at higher boost

 

couldn't tell you exactly how much it bottlenecks but, back when i had an rsx, the fujitsubo powergetter bottlenecked like mad also.

unless you're mad obsessed with jdm, i wouldn't use that exhaust...even then, i would get an amuse or arc exhaust over that