New 2009 2010 BMW Z4 - ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   New 2009 2010 BMW Z4 - ZPOST > BMW Z4 Forum (E89) > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications

Post Reply
 
Thread Tools Search this Thread
      12-26-2015, 07:15 PM   #1
TandR
Enlisted Member
4
Rep
40
Posts

Drives: 11' Z4 35i
Join Date: Mar 2015
Location: Charleston SC

iTrader: (1)

Newbie at Data Logging Cobb OTS E30 Tune. Little help?

Edit post #2. answered my own question with the help of our 335i brothers.


Hey guys I've been data logging our 2011 Z4 35i on Cobb's OTS E30 map.

Current mods on the car:

Muffler Delete
Secondary cats deleted
(2) Vibrant 1791 resonators
VRSF Catless Down pipes
VRSF 7" intercooler
BMS DCI
VVT Turbo inlets
H&R Springs
Factory 19s powder coated
Nitto NT05 Tires (275 rears, 255 fronts)


Here is a data log I ran in a 2nd gear run. I have 7 gallons of E85 and the rest with 93 (e10), should be running a E48 mix. Figured with our bigger fuel pumps, better safe then sorry, unless running this mix on the OTS e30 map is making the HPFP work too hard.

http://www.datazap.me/u/tandr/log-14...=0&data=3-8-11

those who know about tuning, can you put in your 2 cents? I feel from I've begin to understand especially from posts from Buraq that my timing and what not looks awesome, my boost is dialing back a little too much and my HPFP is dropping too much. 760psi at like 6k. Which is too low. Do I need to dial back my E mix because I'm running the OTS E30 map?


Any input/knowledgable input is greatly appreciated! Plan on doing a E60-ish dyno tune next month to hopefully get around 450whp.


Here's a few pics of the car









Last edited by TandR; 12-26-2015 at 11:51 PM..
Appreciate 0
      12-26-2015, 11:50 PM   #2
TandR
Enlisted Member
4
Rep
40
Posts

Drives: 11' Z4 35i
Join Date: Mar 2015
Location: Charleston SC

iTrader: (1)

Guess I can answer my own question here. I was running a e48 blend and added 4 more gallons of 93 to get around a e36 blend. HPFP looks so much better now.

If anyone has some good input, feel free to chime in!

http://datazap.me/u/tandr/log-145119...og=0&data=1-11
Appreciate 0
      12-27-2015, 12:50 AM   #3
BQTuning
Banned
United_States
469
Rep
4,392
Posts

Drives: 2012 Z4 sDrive35i M Sport 6MT
Join Date: Nov 2010
Location: bq@bqtuning.com

iTrader: (0)

The COBB OTS maps are not tuned to run more than E30 fuel. The fuel system tuning is relatively still stock other than the scalars being upped to support the fuel type ie E30.

Example of E70 fuel on an E89 Z4 : http://datazap.me/u/buraq/log-145031...-20-21&mark=48

I am pushing about 500 whp / 550 wtq

Another thing, you are having post shift delays. COBB OTS maps v403 were uniformed to remedy the problem 6AT cars were having which had a horrible impact on post shifts with DCT cars. This can lead to clutch slippage and overheating of the DCT.

Too much wastegate oscillation down low, I know that can be felt.

If you want a custom tune shoot an email to wedgeperformance@gmail.com . Ken will get you setup before handing your stuff over to me to begin tuning as I deal strictly with tuning cars on COBB but I also tune on MHD ONLY for FBO 1M/ 335is/ E89 Z4/ N54 DCT cars

Love the setup of your car and would love to tune it for you. I was thinking in the long run to do a matte or frozen black on our Z4
Appreciate 0
      12-27-2015, 02:38 PM   #4
TandR
Enlisted Member
4
Rep
40
Posts

Drives: 11' Z4 35i
Join Date: Mar 2015
Location: Charleston SC

iTrader: (1)

BuraQ, Thanks for replying. I know you know more about ethanol and the Z's fuel then anyone here. I noticed the DCT does shift slower sometimes and it doesn't seem like all the power comes back on instantly but takes a second. Is this because there is no back end flash with the cobb's OTS maps?
Yeah I can def feel waste gate oscillation, I'm assuming that can be fixed with a dyno tune?
Do you have plans to push your Z past E70? Do you think Running full E85 is an option on the stock fuel platform?
I was going to have Anthony at AV Engineering Tune our Z next month. I've been waiting to see what results you've found. So your running about 11.5-12 gallons E85 and then then the rest 93?
Appreciate 0
      01-02-2016, 09:21 PM   #5
hooolala
Enlisted Member
4
Rep
48
Posts

Drives: 2011 BMW 550i
Join Date: Aug 2014
Location: Sugar Land, TX

iTrader: (0)

So the VRSF N54 cat less downpipes work on e89? Do you have any fitment issue? Thanks
Appreciate 0
      01-16-2016, 11:19 AM   #6
Lurcher
Captain
Lurcher's Avatar
United_States
75
Rep
679
Posts

Drives: 2012 z4
Join Date: May 2013
Location: Buford, GA (right side of ATL)

iTrader: (0)

Quote:
Originally Posted by hooolala View Post
So the VRSF N54 cat less downpipes work on e89? Do you have any fitment issue? Thanks
Yea, saw this and wondering the same thing - but since he basically replaced the rest of his exhaust - he may have custom pipes in there....
Appreciate 0
Post 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 06:30 PM.




zpost
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