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    • 2016 BMW F30 340i B58 with JB4 and Methanol hits 450whp on the dyno

      The new B58 motor continues to show strong numbers with basic modifications. BMS (Burger Tuning) added methanol for supplemental fuel in addition to their JB4 tune on a 2016 F30 340i and the results certainly are impressive.

      More details in the words of Terry@BMS below:


      Hey guys, Had a chance to strap down our 2016 340i today for an hour of dyno tuning. Having done lots of runway testing last weekend at Shift Sector, including taking down a stock tune M4, I had a feeling the car was going to perform pretty well on the dyno. And was not disappointed.

      The current setup is 100% stock except for a B58 JB4 BETA, BMS intake, and a BMS B58 water/meth kit. Exhaust is fully stock. Fuel was ~93 octane and meth mixture ~80%.

      The BMS B58 water/meth kit has some additional parts not included in our normal kits including a PNP nozzle adapter, an EWG connector for the JB4, and some additional fittings.

      With the EWG connector in place we're able to control as much boost as the turbo wants to make. But we've found power peaks out ~21psi, despite the turbo willingly making much more boost. Runs from 22-24psi at the same timing values all resulted in the same or less power. So we're probably approaching the stock turbo limits now. Maybe another 15-20whp ultimately in there with exhaust and other work.

      Most impressive is how well it holds power to redline especially relative to previous turbo BMW motors like the N54 & notoriously weak top end N55. I'm pretty excited about this new motor.




      This article was originally published in forum thread: JB4 B58 Methanol Dyno Testing - 450whp started by Terry@BMS View original post
      Comments 14 Comments
      1. ms335i's Avatar
        ms335i -
        Good job Terry. Always pushing the bmw platform forward and fast. Love it.
      1. fastgti69's Avatar
        fastgti69 -
        Very crazy how lean it is. I want to strap it on our car with a downpipe and see if there are any gains.
      1. Terry@BMS's Avatar
        Terry@BMS -
        It's like an N55 EWG. They run mid 14s down low to mid 13s up top. Will be interesting to compare with your DP B58!
      1. Sticky's Avatar
        Sticky -
        Promoted to the front page with small intro.

        Impressive numbers this early.
      1. 7to3_enthusiast's Avatar
        7to3_enthusiast -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        Very crazy how lean it is. I want to strap it on our car with a downpipe and see if there are any gains.
        +1

        Maybe I'm just falling behind in the modern turbo era but that is crazy lean. Is that AFR readout correct? Wish I could run my rotary that lean Click here to enlarge
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by 7to3_enthusiast Click here to enlarge
        +1

        Maybe I'm just falling behind in the modern turbo era but that is crazy lean. Is that AFR readout correct? Wish I could run my rotary that lean Click here to enlarge
        Yea, it's pretty normal for this car.
      1. Stucks's Avatar
        Stucks -
        +1 on that being really lean. i wonder how that is going to affect things down the road with lots of abuse/racing/power. This is a closed deck block right?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Stucks Click here to enlarge
        +1 on that being really lean. i wonder how that is going to affect things down the road with lots of abuse/racing/power. This is a closed deck block right?
        It is indeed closed deck: http://www.bimmerboost.com/content.p...specifications

        Click here to enlarge
      1. Sam@ActiveAutowerke's Avatar
        Sam@ActiveAutowerke -
        Nice results! These cars will be moving out soon enough!! Interested to see an aftermarket stock frame turbo b58 run. cant wait to see these cars progress in the aftermarket scene!!!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sam@ActiveAutowerke Click here to enlarge
        Nice results! These cars will be moving out soon enough!! Interested to see an aftermarket stock frame turbo b58 run. cant wait to see these cars progress in the aftermarket scene!!!
        Where are the Active Autowerke B58 goodies?
      1. Sam@ActiveAutowerke's Avatar
        Sam@ActiveAutowerke -
        ​We need a car to make those goodies on!!! ANYONE HAVE A 340I THEY WANT TO DONATE? LOL
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Runs from 22-24psi at the same timing values all resulted in the same or less power. So we're probably approaching the stock turbo limits now. Maybe another 15-20whp ultimately in there with exhaust and other work.

        Most impressive is how well it holds power to redline especially relative to previous turbo BMW motors like the N54 & notoriously weak top end N55.
        Its holding that top end because it has much less back pressure, the ability to run more boost, and not see anymore power is because you are running out of compressor. As I said we have wheels ready to go to do a stage 1 on these cars, already have one being machined.
      1. RobNyc's Avatar
        RobNyc -
        bump
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        Bumping for? Turbos or other? Our wheels are done. We will have a unit ready for testing soon