Intake system?

[blue325es]

Awesome.. Thanks for all your help guys. I'll definitely be doing some research and hopefully be able to to go to meet on the 15th

[blefevre]

It was said before, but get a different diff. Hands down the best improvement you can do if you can live with higher rpms.

[blue325es]

What model does the 3.73 come in?

[Bimmerman325i]

any manual 'i' car.

[blefevre]

325i/iS

Edit: yes, manual too.

[colorado_cabrio]

cabrio has 3.73, but I'd assume it's an open diff

[gmyers395]

Im pretty sure they have a couple 4.10 diffs laying around Autosport Werks that they would let go. I don't think they want too much for them either.

[Bimmerman325i]

Personally, i'd rather have a LSD 3.73 than an open 4.10, having had a 4.10 LSD. The gearing change is nice on the street (not so nice on track or autox), but these cars drive remarkably different with an LSD.

[iamsam]

Im pretty sure they have a couple 4.10 diffs laying around Autosport Werks that they would let go. I don't think they want too much for them either.

I need to rebuild my 4.10 LSD BAD, it is wailing loud. Do they have rebuild parts?

[gmyers395]

The 4.10s they have are lsd. And I don't think they have rebuild parts but don't quote me.

[blefevre]

I don't think there are rebuild parts either.

OP: Don't put a 4.10 in an "es". I would do a 3.73 in that car. I still love my 4.10 in the 325iS. Sure it's loud at 80 but w/e it's a blast to drive.

[blue325es]

Ya that's my plan.. Definitely gonna do a 3.73.. Where's autosport werks

[blue325es]

And I'm assuming a bigger driveshaft is required

[mkcman17]

Swapping a diff is pretty simple. As long as you stay medium case the driveshaft/rear geometry wont change.

[blue325es]

Very nice.. Saves me some hassle