lots of smoke in 4th and 5th gear and lil in 3rd

[ther1pper]

14b
hard upper ic piping
mbc
greddy type-rs bov
apexi downpipe 2.5"
apexi 3" catback
greddy oil catch tank
ported 2g exhaust mani
safc (blue)

Thats all i can really think of.

But i replaced head gasket so i dont think its that, and its definatly not blue smoke, but could be piston rings, will change those next. Think it could be a warped head of some sort? ANything will help