Mr Wasabi

I picked up a used JB+ for my 08 535i and am wondering how much I should crank it up initially? The car is stock except for a K&N filter and I don't plan on doing any major mods. I'm just looking for the best performance I can get out of my daily driver without any issues. I understand I can try different settings but getting to it may be a hassle.

Thanks for any input.

audiophool

I'm running it on map 5. Tried map 1 to start, but I like 5 better. Mine's stock aside from DCI.

Mr Wasabi

Thanks for the input,

What's the downside going with higher settings? I'm trying to avoid a lot of trial and error.

audiophool

Not completely sure, but map 5 feels stronger by comparo. I'm assuming map 1 is a canned map that *should* be OK for stock but 5 adapts. Now, adapts how I don't know for sure. Somebody correct my assumptions if not so.

DanL

He's got a JB+, not a JB4....

Keep the dial either at the 12 o'clock position or turn it up a bit to 1 o'clock for now. You may want to consider picking up some DCI's to replace the stock intake. That will give you easy access to the JB+ for any future tweaks. Also, start saving your pennies and replace it with a JB4 G5 ISO when you can. It's much smoother, more powerful, has tons of great features, and is easier on the engine.

Mr Wasabi

It's not installed yet but currently at the 1:00 position. I'm going to roll with that and see how the car adjusts for a week or so. Also, I'm sticking with a drop-in filter for now and don't plan on any other engine performance related mods.

Thanks again.