[cmxenon]

So, I just bought a 2009 335xi. Brand new valve cover gasket, oil pan gasket, and a few other things. Everything is in good condition as of right now. No wasgate rattle(yet) etc... I'm looking to go single turbo in the future, but I don't wanna spend a fortune. Can anyone give me a little bit more insight on this? Thank you!

[nsjames]

they probably could in one of the engine forums.

this forum is for the AWD system specifically.

[jeffzzz]

you'll blow your transfer case at around 550-600 whp based on some facebook/spool street posts i've seen

[techwhiz]

Originally Posted by cmxenon

So, I just bought a 2009 335xi. Brand new valve cover gasket, oil pan gasket, and a few other things. Everything is in good condition as of right now. No wasgate rattle(yet) etc... I'm looking to go single turbo in the future, but I don't wanna spend a fortune. Can anyone give me a little bit more insight on this? Thank you!

Your profile says NY.
Based on what I know about Ca. and NY don't do the single.
Go with twins. NY like Ca, if I'm not mistaken does inspections for emissions equipment. You will fail a visual inspection.

A good set of twins is your answer.

[cortez08]

Originally Posted by jeffzzz

you'll blow your transfer case at around 550-600 whp based on some facebook/spool street posts i've seen

Not true on a single turbo application. Upgraded engine mounts, poly bushings, and transfer case solid or poly mounts greatly increase strength of the x drive system. Highway pulls and rolls off anti lag are not a problem even at 650 whp with the upgrades I mentioned.

Now to your point if you are dumping the clutch at 5k on upgraded twins to get a killer 60 foot time, bad things are going to happen.

[jeffzzz]

Originally Posted by cortez08

Not true on a single turbo application. Upgraded engine mounts, poly bushings, and transfer case solid or poly mounts greatly increase strength of the x drive system. Highway pulls and rolls off anti lag are not a problem even at 650 whp with the upgrades I mentioned.

Now to your point if you are dumping the clutch at 5k on upgraded twins to get a killer 60 foot time, bad things are going to happen.

Oops, I should have specified stock lol

[addictedtoboost]

Originally Posted by jeffzzz

you'll blow your transfer case at around 550-600 whp based on some facebook/spool street posts i've seen

I guess I will soon find out what happens to my transfer case since I am going ST bottom mount on my 335xi E92. I'm going with a GTX3582R running flex fuel e50 map most liekly along with a custom flex fuel single turbo tune. I am aiming for right around 600ish whp