E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > How much horsepower can a 335xi handle?



Reply
 
Thread Tools Search this Thread
      05-28-2021, 07:45 PM   #1
XZ2V
New Member
0
Rep
5
Posts

Drives: BMW 335xi
Join Date: May 2021
Location: CT

iTrader: (0)

Question How much horsepower can a 335xi handle?

So my 335 xi have about 80k miles with new turbos how much can push it before I risk breaking parts and other things in the car? I really want to be able to get to around 500-550 hp with similar torque numbers. Is this possible?
Appreciate 0
      05-29-2021, 09:16 AM   #2
MikeP335i
Private
15
Rep
67
Posts

Drives: 2009 335xi
Join Date: Sep 2018
Location: Annandale, VA

iTrader: (0)

I'm headed toward this goal as well. Right now I'm on a stage 2 motiv ethanol tune on stock turbos. All good just normal maintenance so far. I have pure HF in the plan once the stocker go. My shop has a lot of experience with N54 platform and thinks I'm good to about 550 - 600 excepting hard launches. They say the dif and axles are a weak point. This is also where you need to worry about your transmission from what I understand as they likely have some considerable mileage. There aren't any big transmission upgrades available as far as I know. I'm curious to see what others say, there was a guy in Chicago that had a thread going about his high horsepower x drive build. Good read.
Appreciate 0
      05-30-2021, 09:27 PM   #3
Bimmer_Bro
Captain
Bimmer_Bro's Avatar
Canada
389
Rep
970
Posts

Drives: 2010 BMW 335xi LCI
Join Date: Dec 2019
Location: Calgary Alberta Canada

iTrader: (0)

Quote:
Originally Posted by XZ2V View Post
So my 335 xi have about 80k miles with new turbos how much can push it before I risk breaking parts and other things in the car? I really want to be able to get to around 500-550 hp with similar torque numbers. Is this possible?
Should be possible. Make sure you do the full transmission service.
Also use xhp stage 3 if you aren't already. Worth every penny.

I believe 600 ish the the max the auto trans can handle. Above that and the internal clutches start to slip.
__________________
Instagram : @Bimmer_bro
Appreciate 0
      05-31-2021, 01:57 PM   #4
whyzee125
Brigadier General
1637
Rep
3,592
Posts

Drives: Dinan stage 2 335i
Join Date: Jul 2014
Location: Chattanooga Tn

iTrader: (0)

Maintenance is key for longevity. If you don't drive like a goon/launch all the time, never push the car when cold, and keep an eye on your logs, you can push that power level with confidence.

550whp is a bit of a tricky number though as you mentioned you have new turbos so I'm guessing you want to keep them. The max power you can reliably make on stock turbos is about 480whp on full e85, so if you'd be satisfied with that, it's pretty cost effective.

Beyond that you'd need to either go upgraded twins or single turbo which increases costs significantly, although single turbo at that power level is very reliable.
Appreciate 1
      06-01-2021, 09:30 PM   #5
MikeP335i
Private
15
Rep
67
Posts

Drives: 2009 335xi
Join Date: Sep 2018
Location: Annandale, VA

iTrader: (0)

I've flashed the xhp transmission tune in the past 2 weeks. Stage 2 for now, but I'm planning to try stage 3 soon. I had the transmission service with fluid, pan and solenoids. Not cheap, but hoping to make the trans last. I'm at 96K. Anyone have any experience on interpreting the clutch wear from the XHP diagnostics? Haven't reset any adaptions and hear mixed opinions on that.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 05:11 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST