easiest brake booster to modify

[M20power93]

I want to do an m50 swap into my 4door 325i, what's the easiest brake booster to use and modify (requires the least amount of fabrication).

[blackhawkimpact]

Stock booster

[M20power93]

how do you go about modifying the stock one?

[e30rapidic]

944, just thread the rod further

[jaywood]

how do you go about modifying the stock one?

Slot the holes in the firewall and slide it over

[drulle]

^^ I just did it on my 325i 4door. Super easy to do. Instead of slotting the holes I just drilled 4 new holes 1/2" to the right. I still had to trim intake manifold fins for clearance. This gave about 1/4" gap between booster and IM. Hope this helps

[M20power93]

^^this sounds pretty easy to do

[glucklich21]

IX Booster. Drops right in and you just shave a few fins.

[justin_l_]

IX Booster. Drops right in and you just shave a few fins.

and get a new master and remote resivoir.

[Mr.SWISS]

and get a new master and remote resivoir.

I think I am going to go this route after not liking the modded E21 booster feel, really not caring to hack my firewall, and now the Audi booster hits the TPS too! So it looks like a remote res is the best setup with the 735i booster and master, and 2002 res.

[M20power93]

are there any modifcations that go with using the stock booster besides drilling different holes and perhaps shaving a little off the IM?

[drumad]

944, just thread the rod further

yes.

[e30s50dan]

IX Booster. Drops right in and you just shave a few fins.

This

[z31maniac]

THR booster + new master cylinder + Massive Street kit is the route I went and the brakes were outstanding.

[crazyvwobie]

Wow a post every week about this it seems.You are doing an engine swap the booster is one of the easiest things to do.I used 944 and simply threaded the rod a little some more ,pretty much a no brainer and seems much easierer and cleaner then drilling new holes and getting a new res and mc.Not to mention paid $25 dollars and brakes are great.