finally have track tested my car with catch can v4
and i can confirm its a winner, and i dont use this car like normal people, eg it will do 12 20 minute session each track day with two drivers
previously i would limit the revs to 7k at the track to minamise blow by with the above setup 8k is no dramas all day
setup
stock motor
anywhere between 280-340rwkw
mines cam baffles ( had these on v1-3 and did not do shit for blow by)
two catch cans
-12 vent oil cap to sump(DS)
-12 drain second catch can to sumop (DS)
-10 scavenge pump from catch can one sump ( have not had to use this yet, i assume i will in a few track days as the engine wears)
i have not depolyed the external scavange
will report back as the track days pile up and it slowely wears out