[MoTastic_2]

So I just recently traded my MB to go back to the BMW family, hated the benz.

My old BMW's I was with COBB or ran a vishnu but now with this I am on this and have a question.

How is the JB4 with the 2013's? Anyone have it on there? What common issues do you experience and what should I expect? I am about to order it but dont wanna ruin the car.

On a side note got a COP 2013 M-Sport with Sports package, Convenience, Cold Weather. Its 23k Miles White on Black for 49. What cha think?

-Mo

[MoTastic_2]

No one?

[MoTastic_2]

Just seems like no one wants to chime in :/

[omer]

Jb4 all the way.

[Juiced46]

I run the JB4 Stage 2 on my 2013 535i 6spd with zero issues. No issues and you will not ruin the car.

[MoTastic_2]

Ok great I ordered it! What's this battery issue every one speaks of

[paul223]

JB4 2 is good, specially with 50/50 ethanol mix. If you don't drive car for 3-4 days, battery gets low. Happened to my car several times. Besides JB4, you don't have any choice.

[MoTastic_2]

I just ordered te jb4 with the USB cable.

Why does it drain the battery? Do we have a reason on it?

[omer]

once in a while it happens, i dont think is a jb problem. most f10s have this issue

[BigDeep1]

Originally Posted by paul223

JB4 2 is good, specially with 50/50 ethanol mix. If you don't drive car for 3-4 days, battery gets low. Happened to my car several times. Besides JB4, you don't have any choice.

What - no choice?? There are half a dozen options out there. BMS is probably the best one. The JB3 - stage 1 has no battery drain issues. Never did see Terry post a resolution for this or even fully address it. For that reason I never bought a tune. I will probably get the jb3 one day as it seems safe. My car can sit for a week easily. No time for battery drain

[ukrandriy89]

not much to say about the tune other than you will love it… i have the '12 535i with the jb4 stage 2, carless down pipe and the car is on another level… great hp gain, sound, and no issues…