Hi, just wondering if a t4 divided .85 turbine is big enough for a bridgeport, my exhaust is pretty aggressive and it's more of a n/a port
Also IWG or dual externals

 

with what turbine wheel? i'm running a divided t4 .84 with an O Trim wheel, and its a great match for a stock port, at like ~10psi
you're totally allowed to try it, and take measurements too, i did some quick and dirty pre turbo and post turbo pressure measurements

 

60/55 I don't know the trim

 

is it one of the new G30s? if yes, it might do ok

 

it's a pulsar 5455g I think its a nockoff of a garret it was recomended on another one of my posts, I haven't ported the center iron yet would it be best to leave it semi bridge, even tho i really want mad braps

 

my frame of reference is with the older turbos, Garrett T4 and the Greddy/Mitsubishi TD06/7/T78 etc. with the older stuff you have a chicken and egg thing where the engine doesn't like backpressure so you need a bigger turbo and the bigger turbo needs more boost to be efficient, which ends up with a big HP setup. a traditional full bridge would be like ~500hp at 15psi or more (KSP was making over 700, in 2001)

these newer turbos work much better, well everywhere; so you probably can have a BP with less power. although if its just the brap you want raise the idle speed and run it rich, the brap is just a misfire, you don't need much to get the engine to do it

 

yea was wondering about that because my engine would brap at full choke I'll just leave it half then