Autotalent
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Engine / Drivetrain / Exhaust / Bolt-ons / Tuning

Post Reply
 
Thread Tools Search this Thread
      01-12-2022, 10:18 AM   #1
f93_gc
Private
No_Country
24
Rep
66
Posts

Drives: 2020 BMW M8 Competition Gran C
Join Date: May 2020
Location: Los Angeles, CA

iTrader: (0)

Garage List
BM3 Multimap Tune

I hate to be that guy, but i just noticed on the BM3 multi map stage 2 tune the exhaust burbles tend to go away a lot more frequently now. Is it because of my ethanol mixture (~80-85%)? When i ran normal pump gas it would also go away after a while but it seems on flex fuel it goes away quicker? Don’t know if it’s just a safety measure in place to prevent some stuff.
Appreciate 0
      01-12-2022, 12:59 PM   #2
TopJimmy
Major General
TopJimmy's Avatar
United_States
5394
Rep
5,123
Posts

Drives: 2023 M3 Comp xDrive
Join Date: Jul 2019
Location: Chester County, PA

iTrader: (5)

Try without cold start. E85 doesn't need cats heated up anyway. If startup roar is on try without that too.
__________________
'18 F80 Base 6MT | '19 F82 Exec DCT | '18 F82 Comp Exec DCT | '23 G80cx
Appreciate 0
      01-12-2022, 09:02 PM   #3
hellokitty
Brigadier General
hellokitty's Avatar
United_States
2884
Rep
3,719
Posts

Drives: '17 M3 ZCP DCT
Join Date: Jul 2010
Location: Southern California

iTrader: (2)

Quote:
Originally Posted by f82_boi View Post
I hate to be that guy, but i just noticed on the BM3 multi map stage 2 tune the exhaust burbles tend to go away a lot more frequently now. Is it because of my ethanol mixture (~80-85%)? When i ran normal pump gas it would also go away after a while but it seems on flex fuel it goes away quicker? Don’t know if it’s just a safety measure in place to prevent some stuff.
Burbles will be louder on pump gas than on alcohol. That's the one thing I noticed
__________________
2017 F80 M3 ZCP / AA GESI DPs / Akrapovic Evo / BBS FI-R 19" / Bend Calibration ECUTEK Flex Fuel | Bilstein B16 DDC + CS EDC / BMC Filters / BMS OCC / CSF HE / ESS CP / Nitto NT555R2 / PD Crank Hub / SPL Suspension / Uniden R7 / Wagner Top Mount IC

2021 Mini GP3 / BMC Filters / BM3 / Cary Jordan E30 / Wagner IC / Remus Race
Appreciate 2
TopJimmy5394.00
TideMD291.50
      01-13-2022, 09:53 AM   #4
TideMD
Some random guy
292
Rep
312
Posts

Drives: 2016 F82 M4 SO
Join Date: Sep 2017
Location: Laffy, LA

iTrader: (0)

Quote:
Originally Posted by hellokitty View Post
Burbles will be louder on pump gas than on alcohol. That's the one thing I noticed
Yes, it's rather embarrassing when I swap over to 93 after running full E85 for a while. Those perfectly mild, but present, little grumbles suddenly turn into a full-on popcorn show.
__________________
Appreciate 1
hellokitty2883.50
Post Reply

Bookmarks

Tags
bm3, e85, ethanol, f82

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 09:46 AM.




f80post
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