Originally Posted by gindajatt1
Also for the 3 stage intake manifold, is that all I need or I need other parts for it too?
AA tune or the intake swap??
for the intake manifold:
just need manifold and the DISA flaps that are attached to it, all else you use from the car. So it is important to get pictures and description from the junkyard before committing, you dont want a stripped manifold. All other sensors you reuse from ur own manifold. The 325i/330i guys have an oil separator which makes it harder to swap, and hoses can break. #28i hoses are okay if you are careful.
Tune or intake manifold:
They will both probably cost the same in the end.
The manifold is harder to find and the swap take a good amount of time (5-6h for me). So a tune is best if you don't want the hassle or don't have a garage/working space( its getting colder).
Also the manifold alone is not something alot of people have run, therefore not sure how the "dip" @ ~3k feels on 328i and if there any differences in feel between manual and auto transmissions.