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    • BMW turbo V8 tuning value - BMS JB4 shows massive torque gains on 2016 F10 550i N63TU with 621 lb-ft at the wheels

      The N63 and N63TU (technical update) twin turbo 4.4 liter V8's offer incredible tuning value. Although the engines are twin turbocharged and share the 4.4 liters of displacement (and some of the engine internals) with the S63TU out of the F10 M5 the N63 manifold and turbo setup differs.


      That means the N63 is not quite as capable as the S63 with bolt on tuning but it still gets great aftermarket gains and is a much better value. Just look at the price of an F10 M5 and a used 550i.

      One can buy a 550i, add a JB4, and have M5 performance at a fraction of the cost:


      The N63 and N63TU are simply a great BMW turbo tuning value and have yet to reach their potential in the aftermarket.

      Quote Originally Posted by Terry@BMS
      Had a chance to get our new development 550 on the dyno for a little TU JB4 dyno testing. In it's current trim the car has our prototype intake system, 35% E85, and a prototype JB4 that attaches to the TMAP connectors, CANbus, and fuel pressure connectors. We do not have a boost control module functional yet. Mainly, because those connectors are impossible to reach. The JB4 also requires you to run the car with the MAF sensors unplugged, we'll be evaluating that in the future to see if there is a work around.

      Anyway the tuning potential is undeniable. Over 100whp gained stock boost vs. tuned boost. I'll add some logs to the thread later of both trims. If we could get the BCM going there would be another 40-50whp in here easily I think. We'll keep working on it.

      This article was originally published in forum thread: BMW turbo V8 tuning value - BMS JB4 shows massive torque gains on 2016 F10 550i N63TU with 621 lb-ft at the wheels started by Sticky View original post
      Comments 26 Comments
      1. Stevenh's Avatar
        Stevenh -
        Jeeze. I might be showing my age here, but there was a time when 500whp was a huge deal. This is getting to be too easy.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Stevenh Click here to enlarge
        Jeeze. I might be showing my age here, but there was a time when 500whp was a huge deal. This is getting to be too easy.
        We're spoiled. You can make 600 whp and people are just like, 'meh' .
      1. Terry@BMS's Avatar
        Terry@BMS -
        Tons of tuning potential for the N63TU.. If only we could easily reach the boost solenoids to get a BCM going we'd have another 50whp. I'm sure of it.

        Here is a video of our M5 on map0 (disabled) vs. the 550 N63TU from a rolling 50mph start.

      1. Newguy123's Avatar
        Newguy123 -
        power curve is all downhill above 5k, Looks like a fast fun car if shifting at 5500 though Click here to enlarge nice work.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Newguy123 Click here to enlarge
        power curve is all downhill above 5k, Looks like a fast fun car if shifting at 5500 though Click here to enlarge nice work.
        I can't remember the last time I could say a BMW engine has a beautiful curve. It's been a while.
      1. Bowser330's Avatar
        Bowser330 -
        +150ft-lbs @ 3750rpm in a 550xi should improve the 0-60 greatly.

        What's with the dip from 5-6K rpm? Turbos running out of breath? Pure turbos next?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        What's with the dip from 5-6K rpm? Turbos running out of breath?
        That would be my guess.
      1. Ando@BMS's Avatar
        Ando@BMS -
        This car is amazing. Perfect sleeper.
        Just for comparison it's basically same wheel hp as stock m5, but has extra 100 wheel torque.
      1. biz77's Avatar
        biz77 -
        Just keep in the back of your mind that the low purchase price of an early generation F10 with the non-tu N63 will long be forgotten once you start paying for the maintenance and repairs on it. This is one BMW engine I would avoid like the plague. I'm guessing the N63TU will prove to be a more reliable motor, but how much better only time will tell.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by biz77 Click here to enlarge
        Just keep in the back of your mind that the low purchase price of an early generation F10 with the non-tu N63 will long be forgotten once you start paying for the maintenance and repairs on it. This is one BMW engine I would avoid like the plague. I'm guessing the N63TU will prove to be a more reliable motor, but how much better only time will tell.
        Avoid like the plague? Why?

        The N63TU is a great value right now.
      1. lulz_m3's Avatar
        lulz_m3 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Avoid like the plague? Why?

        The N63TU is a great value right now.
        The N63 non tu has all kinds of issues... battery charging issues, timing chain guide issues, injector issues. BMW didnt issue a recall, but rather a customer "Care package" that includes them replacing the battery, but it expires once out of warranty. The TU is a massive improvement from what ive read/seen.
      1. biz77's Avatar
        biz77 -
        Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
        The N63 non tu has all kinds of issues... battery charging issues, timing chain guide issues, injector issues. BMW didnt issue a recall, but rather a customer "Care package" that includes them replacing the battery, but it expires once out of warranty. The TU is a massive improvement from what ive read/seen.
        Don't forget valve issues that require engine removal and run $5,000 - $6,000 with an independent and $10K at a BMW dealer. Yes, the customer care package that solved the electrical issues by replacing the battery with a new AGM battery at every oil change. Can you imagine the surprise for someone doing their first out-of-warranty oil change? $600 oil change with a new AGM battery LOL! This is why you can pick up an early generation F10 550i for about the same price as a same year 335i. Avoid like the plague! It will be like trying to get rid of a bag of herpes to the next sucker after it has consumed your savings account, retirement account and kid's college funds.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by biz77 Click here to enlarge
        Don't forget valve issues that require engine removal and run $5,000 - $6,000 with an independent and $10K at a BMW dealer. Yes, the customer care package that solved the electrical issues by replacing the battery with a new AGM battery at every oil change. Can you imagine the surprise for someone doing their first out-of-warranty oil change? $600 oil change with a new AGM battery LOL! This is why you can pick up an early generation F10 550i for about the same price as a same year 335i. Avoid like the plague! It will be like trying to get rid of a bag of herpes to the next sucker after it has consumed your savings account, retirement account and kid's college funds.
        Alrighty then, N63TU it is.
      1. lulz_m3's Avatar
        lulz_m3 -
        Click here to enlarge Originally Posted by biz77 Click here to enlarge
        Don't forget valve issues that require engine removal and run $5,000 - $6,000 with an independent and $10K at a BMW dealer. Yes, the customer care package that solved the electrical issues by replacing the battery with a new AGM battery at every oil change. Can you imagine the surprise for someone doing their first out-of-warranty oil change? $600 oil change with a new AGM battery LOL! This is why you can pick up an early generation F10 550i for about the same price as a same year 335i. Avoid like the plague! It will be like trying to get rid of a bag of herpes to the next sucker after it has consumed your savings account, retirement account and kid's college funds.
        I'm not smart on the valve issues but steered clear of the 550 because of the design of the intake... knowing that DI motors are horrible in regards to carbon buildup on the intake valves, and knowing that it would eventually need to be walnut blasted, I realized the only way to do that would be to drop the entire engine, which is obviously not a viable solution.
      1. Terry@BMS's Avatar
        Terry@BMS -
        N63 blows but N63TU is much better.... Without the BCM we're not able to add as much dutycycle as I'd like resulting in the power curve dropping prematurely. We'll be working on options for that though.
      1. mynameisplayer's Avatar
        mynameisplayer -
        just me, or is the M5 short shifting? I don't have one sounds short of 7k....
      1. Newguy123's Avatar
        Newguy123 -
        Click here to enlarge Originally Posted by mynameisplayer Click here to enlarge
        just me, or is the M5 short shifting? I don't have one sounds short of 7k....
        definitely sounds that way.
      1. mynameisplayer's Avatar
        mynameisplayer -
        don't get me wrong - I have a n63tu and would love to open it up with tuning....or I don't care any more 'cos the M3 is now run-in Click here to enlarge
      1. Terry@BMS's Avatar
        Terry@BMS -
        Jon was shifting our M5 a bit before 7k on the stock runs. On the JB4 active runs he shifts it around 6200rpm since power drops off so quickly with stock turbos.
      1. Stevenh's Avatar
        Stevenh -
        Can someone please shoehorn one of these into an E30 and show us what the ultimate BMW junkyard dragcar could look like?