E36 328 exhaust manifold & compatibility fit on M50 520i non-vanos engine

[ktteoh]

does anyone know if the exhaust manifold from a 3 series 328 engine will fit plug & play on a M50 non-vanos 520i engine?

someone told me the default 520i exhaust manifold is restrictive and 328 one would give better breating.

[winfred]

it'll bolt up but i don't think they are any better, if it has the air injection system you will need to plug that up to use the m52 stuff

[ktteoh]

what is air injection system? if there is one (a hole?), how to plug it? weld it shut?


it'll bolt up but i don't think they are any better, if it has the air injection system you will need to plug that up to use the m52 stuff

[Jon K]

its an emissions thing - you have to plug it.