E90Post
 


VIBE Motorsports
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > How does variance affect the tunes?



Reply
 
Thread Tools Search this Thread
      01-08-2012, 12:35 PM   #1
Ferruccio
First Lieutenant
Ferruccio's Avatar
United_States
7
Rep
342
Posts

 
Drives: 2010 335i
Join Date: May 2011
Location: Colorado Springs, CO

iTrader: (1)

How does variance affect the tunes?

Since no two N54's have exactly the same horsepower stock, how does, say, a higher stock horsepower N54 get affected with the same type of tune? (Piggyback, ECU flash, etc) Does the tune become more powerful by a similar "multiplier"?
Appreciate 0
      01-08-2012, 12:48 PM   #2
sear
Lieutenant
United_States
6
Rep
462
Posts

 
Drives: 2007 335xi
Join Date: Sep 2009
Location: Colorado Springs

iTrader: (0)

There are too many variables that will effect individual results to get the answer that it sounds like you are looking for. You can however get a solid idea of where your car might stack up by looking at the results posted by folks with similar mods and running in similar conditions as you. There should be enough posted on this forum to get a good idea for what you can roughly expect...

A sampling of the main variables that will effect power/dyno results:

-Type of dyno (variation will still exist even dyno to dyno of the same type)
-Weather (basically density altitude) (most dynos have corrections for this, but they really only help to roughly compare as weather conditions change)
- Fuel (octane levels) (the N54 especially tuned likes Octane)
- The sum of all collective modifications
- base condition of stock parts(plugs, injectors, no carbon buildup, etc)
Appreciate 0
      01-08-2012, 01:53 PM   #3
rader1
Banned
34
Rep
2,197
Posts

 
Drives: Cobb Stage 2+ 135i
Join Date: Apr 2011
Location: Roanoke, VA

iTrader: (0)

Quote:
Originally Posted by Ferruccio View Post
Since no two N54's have exactly the same horsepower stock, how does, say, a higher stock horsepower N54 get affected with the same type of tune? (Piggyback, ECU flash, etc) Does the tune become more powerful by a similar "multiplier"?
Most tune only cars see a bump of about -50whp. If your car made 250whp stock, you should expect about 300whp on the same dyno. If it is a factory freak 300whp car then you should see about 350whp on the same dyno.
But as sear has said, there's are too many variables to say anything with a huge degree of certainty as pertains to HP gains and estimates.
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
Forum Jump


All times are GMT -5. The time now is 05:17 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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