How about up to 60hp to the wheels (80hp crank) on a completely stock car on pump gas?
The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Including on the fly in dash map switching between factory and various performance maps, optional in dash gauge displays for boost, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built in data logging, built in code reading, and much more.
JB4_B58 is CARB Approved Under Executive Order (EO) No.D-744-4 for all 2016-2018 BMW 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i, and X1 applications. VIEW BURGER MOTORSPORTS'S EMISSION GUIDELINES
I’ve been reading and researching between JB4 and BM3. I went with JB4 because they have been out longer and spoke to Kevin, Sr Mod Expert and I don’t want any issues when I bring in my car to the dealership. Also it’s really a preference. Everyone will have different opinion. That said, I can feel the difference already and I’m very happy with the outcome. Of course you have to do the other bolt on mods just not the basic. Like I said is preference on what you are looking to do to your car.