[undfetd]

I'm new to the forum, and looking to purchase a 335i E90 platform car. So, I am doing some research to see what the difference/ or best E90 platform 335i (N54?) motor is for performance modifying?

How much power can they hold stock?

engine

trans (auto) and manual/clutch

Fuel system?

Thank you in advance for any help, new to all things BMW.

[Blaster400]

N54 is the engine with the most power potential. It's easy to get to 400 RWHP (or more) with a tune and a few mods. Auto trans can hold up to 500 RWHP and manual trans is good for even more with upgraded clutch. You can run up to 35% E85 with stock fuel system, or up to 60% E85 with an additional in-line LPFP.

Good luck!

[undfetd]

Originally Posted by Blaster400

N54 is the engine with the most power potential. It's easy to get to 400 RWHP (or more) with a tune and a few mods. Auto trans can hold up to 500 RWHP and manual trans is good for even more with upgraded clutch. You can run up to 35% E85 with stock fuel system, or up to 60% E85 with an additional in-line LPFP.

Good luck!

Thank you for the reply, I'm excited to hear that! Am I correct in assuming all 135i/ 335i's (of any year) come with the N54 engine?

[Blaster400]

Originally Posted by undfetd

Am I correct in assuming all 135i/ 335i's (of any year) come with the N54 engine?

Only 335's and 135's 2007-2010 came with the N54. 2011+ came with N55's. All years 335is came with N54's.

[CT335xi]

Originally Posted by undfetd

Thank you for the reply, I'm excited to hear that! Am I correct in assuming all 135i/ 335i's (of any year) come with the N54 engine?

I think after 2010 they switched to the n55 except for the 1M coupe and some of the 335is's some one correct me if I'm wrong.