Log review 2021 m340i (UK)

[SteveMack89]

New to JB4. Stock 2021 Mild hybrid M340i with OPF (UK).

Map 2 log for review. Running 99ron (93/94 oct).

Can i move to Map 3?

[Steve @ BMS/Fuel-It!]

You're getting a couple minor timing corrections up top on map 2, I suspect map 3 is only going to make that worse on this fuel. I'd probably stick with map 2 unless you add some octane booster, meth, or race gas.

[SteveMack89]

Thanks.

Will add some octane booster and log Map 2 & 3 again.

[Steve @ BMS/Fuel-It!]

I'd recommend running map 2 and uploading a log before proceeding to map 3.

[SteveMack89]

Map 2 log with octane booster.

Any better? If not is an absolute map e.g. map 4 likely to help?

Would like to maximise the JB4 so any guidance on the next steps would be good.

Thanks

[Steve @ BMS/Fuel-It!]

You're running about 18psi and getting a few timing corrections up top. My guess is that if you run map 3 or 4 on this fuel, those are going to get worse. Stick with map 2 for a week and upload a new map 2 log next week so we can see if it adapted or still looks the same.