dannyblackpool

putting a new blower on the skyline at mo and have modded the downpipe to fit already. currently still has a 2.5 inch bore flange where original pipe joined original elbow with rest of system 3 inch i think off top of head. will i notice a worthwhile difference changing the flange or is it minimul?? running around 400bhp at 23psi 2.5 gtst

cossiemanden

Yes m8, but you wont be thinking OMG, but everything count`s

dannyblackpool

what sort of losses would we guess at sticking with a 2.5 flange as apposed to 3

cossiemanden

Depends on a lot of things, like backpressure etc but maybe 10-20bhp at your power?

dannyblackpool

hmmmmmmmmmmm