so i have a silvia t28 .64 on the f7r turbo now but i lose all grunt above 6500rpm.
i know a .86 housing will decrease spool but improve flow. however i'm curious how much the .9mm bigger exhaust wheel of the pulsar unit will improve flow?
my thought is to buy a pulsar unit and machine the .64 housing to fit...
any thoughts?
also, how does a gt28rs rear housing compare? as there are many guys running a gt28rs with .64 housing and they don't suffer from bad flow in high rpm's..
i'm trying to find out if it's only the turbo restricting or the f7p cams or both...
silvia dyno's tell me is isn't the flow of the exhaust housing that's restricting...
http://mywebpages.comcast.net/myproj...Dyno_10psi.jpg
cheers,
Arthur