[mattesonb]

I received confirmation from Berger tuning that the JB4 model is compatible for us -http://shipment.co/tracking/2675/4201124992612927005127230000036296

Has anyone else looked into it? Claiming 40hp at the wheels with the B46/48 engine...

[Keweenawbee]

Originally Posted by mattesonb

I received confirmation from Berger tuning that the JB4 model is compatible for us -http://shipment.co/tracking/2675/4201124992612927005127230000036296

Has anyone else looked into it? Claiming 40hp at the wheels with the B46/48 engine...

You ordered it !! ?? Congrats. Please post as much of the process as you can!

[SSIMPS]

I can confirm it works fine on G01 B58 so I don't see why it wouldn't work on the B48 as it does for the 5 series. I just don't think they have updated their website yet.

Install is super easy btw

[mattesonb]

I havent ordered it yet, trying to get a clarification between the JB4 and the JB+ as I don't intend to add a down pipe in the future.

It is my understanding you need to add the bluetooth model with both of them for the digital dash?

Also looking at the Dinan option.

[Keweenawbee]

Originally Posted by mattesonb

I havent ordered it yet, trying to get a clarification between the JB4 and the JB+ as I don't intend to add a down pipe in the future.

It is my understanding you need to add the bluetooth model with both of them for the digital dash?

Also looking at the Dinan option.

You had included the tracking number in your post, got me all excited. I would do this too if it doesn’t affect normal driving. A lot to ask, as why wouldn’t BMW just do it?

[MX330I]

How does the 30i drive with Jb4? Better than stock? Somehow, I feel that it drives better without jb4. Jb4 makes it feel heavier and slower, and only faster at WOT. Don't know what other's experience is.

[brettl]

I've been toying with this idea for a while. I have my lease for another 10 months and toying with buying the car out of the lease due to market conditions on new cars and the lack of incentives from bmw. My guess is this isn't going to change for a while.

To my question, has anyone had both the jb+ and gone to the jb4 on a b46 (b48)? I'm in cali so best gas I can usually get is 91. Does the jb4 create a more linear experience then the jb+, or are they essentially the same for the 91 octane gas I get here? I don't have plans to do other mods, just looking for some more consistent power.

[brettl]

Bump