JB4tech.com - International Turbo Tuning Discussion
mon777ana's Avatar
mon777ana mon777ana is offline
New Member
Posts: 7
Join Date: Apr 2020
Car: F20 LCI 120i 2018
Default b48 with JB4 started to show stock times - 08-25-2020, 12:55 AM

Hi again @Terry @BMS. had to create a new thread as my post in the main forum remains unnoticed unfortunately.

I have F20 120i with B48 engine from new. so far has done 25k with it. When I first installed the JB4 the result was on display. I use dragy. 0-100kmh stock 7.1 seconds. with JB4 dragy came up with 6.1. I was impressed. I have also installed BMS intake as well. So I was very happy with the results until recently I noticed my car became slower. I measured 0-100 with dragy on map 2 and it showed 7.1?!!
I have later bought a bluetooth connecter and an app too. most of gauges on the map are simply not working and I have also updated for the latest firmware as advised and no improvement at all.
I always use shell v power 99 octane here in the UK and to be honest the best performance was delivered in the very beginning without bluetooth, app and its updates.
I would really appreciate if @Terry and @BMS team will look in to my issue because at the moment it is not what it used to be.
My friend has 220i coupe with the same engine on map 6 (custom) it delivered 5.9

Please advise what to do in my case.

Reply With Quote
KnifeEdge87 KnifeEdge87 is offline
Junior Member
Posts: 253
Join Date: Aug 2020
Car: BMW G30 520i 2019
Default 08-29-2020, 07:11 PM

Do you have the CSV log
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2022, JB4tech.com