JB4 for S58 G Chassis M3/M4/X3M/X4M

[Steve @ BMS/Fuel-It!]

New at this so bear with me, not sure if this is where I ask for help but just did a jb4 I am on pump 93 on map 2. 3rd gear pull seemed lean 14s afr and 11s after It went into 4th. Peaked at almost 25 psi in 3rd and held about 19-20 in 4th is something off? Adjustments to be made?

Hi,

Start a support thread and upload the CSV file for assistance.

[Hayden S]

Hi,

I have a 2021 M3 RWD manual.

Just wondering if it is safe to use Map 4 using very good 94 octane fuel.

Or what are the maps you would recommend me to stay with?

I just wanted something with an absolute target instead of an additive.

[Hayden S]

Does JB4 have a way to switch maps on the fly without the bluetooth or hard data cable connector in the car?

Sort of like for the n54 you can switch maps on the steering wheel.

Anything for this?

How does one switch maps without a bluetooth or data cable inside the car?

[Steve @ BMS/Fuel-It!]

Does JB4 have a way to switch maps on the fly without the bluetooth or hard data cable connector in the car?

Sort of like for the n54 you can switch maps on the steering wheel.

Anything for this?

How does one switch maps without a bluetooth or data cable inside the car?

I'd highly suggest getting the cable or bluetooth option. If you're going to be changing maps and running more boost, then you need to be logging as well and you will need one of those to do that.

[Hayden S]

Hi Terry,

Do you offer any custom map 6 tuning for individuals like myself?

Looking to have my map 6 as a custom, fastest map and then use Map 1 for day to day activities.

Thank you