forcd ind

iTrader: (7)

Being new to turbo's, other than size, any advantage to T4 or T6 flange
spooling, more for street driving, etc
I used to see mostly T4 stuff, now seems more T6
how do you decide

Blackpanther99

iTrader: (8)

Most times by your cubes.

Alot of ppl in the forum will say anything over 370 cubes will be better off with a T6 turbo for better power, more boost and to prevent back pressure issues. It sure has worked out fantastic for alot of guys soo T6's are really popular.

stock48

iTrader: (17)

T6 hands down for the track and making the most hp from a given turbo, but a T4 setup can work really well for a foot brake car 370CI or less. If I ever take my car to the next level I will be upgrading to a T6 hotside. There would be at least .2 tenths there. The reason my car is T4 is because I originally built it to race in high altitude.

high impact

iTrader: (5)

Flange size depends on your build specs and goals. How much street driving, racing, engine size, manual or auto? etc...both T4 and T6 are very capable given a proper set up.