[335i54n]

chasing a small boost and ft issue on 1 bank only, all 3 cylinders. is the intake somewhat known to crack or split at the seams?

[AWD Addict]

All of the plastic components are subject to cracking and failing.

Oil vapor gets on them and they get brittle. charge pipe is a common culprit.

[335boston]

Happens , usually at higher boost levels, upgrade it with a BMS or BMP one it’s metal and have port injection ports if you ever want to upgrade fueling

[335boston]

Originally Posted by AWD Addict

All of the plastic components are subject to cracking and failing.

Oil vapor gets on them and they get brittle. charge pipe is a common culprit.

Rolll bs!

[Jaronbwall]

Originally Posted by 335i54n

chasing a small boost and ft issue on 1 bank only, all 3 cylinders. is the intake somewhat known to crack or split at the seams?

Unless you're running big power or dropped it a few times in the garage the odds of the actual intake manifold cracking are slim. It's pretty robust plastic compared to other plastic junk in the engine bay. The o-ring seals could be leaking on the intake or CP. Everything has to aligned, tightened correctly, metal retaining clips seated, or you will leak.