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    • 335/N54 Rob Beck turbo upgrade tuning update with BMS JB4 and dual CM10 meth nozzles - 500 whp

      I wanted to get some good info with the JB4, and being the upstanding legal/moral citizen I am, wanting to keep it clean on the streets the Dyno is the best option. What im going to do is just post the mods/condistions ect, and the post each dyno with the log to match. Ill leave the questions up to you guys.

      Temps 44* outside/ 65* inside shop
      Mods- RB Turbo's,JB4,FBO,meth
      Fuel-Straight ms109 , 95/5% meth/water
      Dyno Location- Radical Racing-Atco Nj


      Things changed since last dyno session
      - replaced single m10 meth nozzle with 2 CM10 meth nozzles
      - replaced Miltek catless exhaust for Vanguard catless exhaust

      Highest run vs. TODAYS baseline- as it should be. Dyno baselines from before are rarely accurate, or at least not as accurate as should be. Now you know what i gain over stock tuining with every available mod*



      Baseline, no meth-




      402-Default Map 2-14/15PSI




      414-Map 2 new F/W-15PSI




      457-MAP6-17PSI




      471-MAP 6-18 PSI




      490-MAP 6-20PSI




      491-MAP 6-20PSI




      492-MAP 6-20PSI




      500-MAP 6-20PSI






      JB4 Vs JB3 Power Delivery Comparo- its as close as i could find to peak HP #'s
      red is JB4/Today-Blue is JB3 (last July)




      Well.. there you have it Keep in mind the baseline is fully modded, with RB's and straight MS109 fuel.

      i think this is a good viewpoint to see where we are currently limited.

      More technical people than i can discuss what was good, what was bad (if anything, besides AFR's obviously) and where we can go from here



      *PAW Motorsports- If you have a set of Heads and/or a Fueling solution, I am more than willing to try it out!

      This article was originally published in forum thread: RB Turbo and JB4 Dyno Tuning Today! started by LostMarine View original post
      Comments 33 Comments
      1. Sticky's Avatar
        Sticky -
        This has been promoted to the front page but there is another article ahead of it in the queue, it will display at 1:00 AM PST on the 27th.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Do not see a neg?
        Ok i was on my phone and I accidently hit the neg, then hit postive a bunch of times lol..didnt know if it went thru
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        I bet a set of AR pipes would help eek out a few more hp Click here to enlarge
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
        I bet a set of AR pipes would help eek out a few more hp Click here to enlarge
        I like to think so as well.. now if only i can find a set..
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        I like to think so as well.. now if only i can find a set..
        Don't mess around with this second hand stuff, e-mail up Andrew, tell him I sent you, and get yourself a brand new set.
      1. oddjob2021's Avatar
        oddjob2021 -
        great numbers LM, 500 wheel is a nice bar. my only qualm is that you stop the dyno short of 7k. on race fuel you should be making peak power at peak or near peak rpm or sustain it not 1k shy and then drop off like it is. its sure better than stock turbo drop off, but i guess i expected RB's to deliver more up at 6000+. or is it that you lower the boost after 6000 on purpose? or maybe the dyno fan was not adequate and you couldnt pull in enough air?

        looking back, one of your 17 and 18psi maps holds power much better up top, so im not sure what to say.
      1. DBFIU's Avatar
        DBFIU -
        Great numbers.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by oddjob2021 Click here to enlarge
        great numbers LM, 500 wheel is a nice bar. my only qualm is that you stop the dyno short of 7k. on race fuel you should be making peak power at peak or near peak rpm or sustain it not 1k shy and then drop off like it is. its sure better than stock turbo drop off, but i guess i expected RB's to deliver more up at 6000+. or is it that you lower the boost after 6000 on purpose? or maybe the dyno fan was not adequate and you couldnt pull in enough air?

        looking back, one of your 17 and 18psi maps holds power much better up top, so im not sure what to say.
        it was risky enough with those AFR's how far do you really want to me to push my luck?

        and im not sure what your getting at with the rpm thing. i let it rip until it shifted, the shop owner was running the dyno though, so maybe a bit of "miscommunication"? im pretty sure he didnt stop it till after it went to shift...
      1. oddjob2021's Avatar
        oddjob2021 -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        it was risky enough with those AFR's how far do you really want to me to push my luck?

        and im not sure what your getting at with the rpm thing. i let it rip until it shifted, the shop owner was running the dyno though, so maybe a bit of "miscommunication"? im pretty sure he didnt stop it till after it went to shift...
        hey if the tune is all its hyped to be i doubt AFR is the concern, you were monitoring it with a pipe sniffer it seems so i dont see you pushing your luck.

        and i forgot you are auto, it always seems to slip my mind, so it shifts early? thats interesting, you learn something new everyday. and i guess they put a taper on the tune before the shift as to not spike, which is why it drops off suddenly. so maybe with a manual we would see power to redline, or at least sustained. im now interested to see a manual RB turbo dyno Click here to enlarge no offence to you or your car, you made great numbers like i said, and your car performs, we all have seen the videos Click here to enlarge and that was on jb3 right? you should ask for a re-run Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Not sure if this is a ridiculous question or not, but can the JB4 raise the rev limiter or not?
      1. Terry@BMS's Avatar
        Terry@BMS -
        No we can't. But he should really be shifting @ 6500rpm or less anyway. Click here to enlarge
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by oddjob2021 Click here to enlarge
        hey if the tune is all its hyped to be i doubt AFR is the concern, you were monitoring it with a pipe sniffer it seems so i dont see you pushing your luck.

        and i forgot you are auto, it always seems to slip my mind, so it shifts early? thats interesting, you learn something new everyday. and i guess they put a taper on the tune before the shift as to not spike, which is why it drops off suddenly. so maybe with a manual we would see power to redline, or at least sustained. im now interested to see a manual RB turbo dyno Click here to enlarge no offence to you or your car, you made great numbers like i said, and your car performs, we all have seen the videos Click here to enlarge and that was on jb3 right? you should ask for a re-run Click here to enlarge
        are you confusing the need for fuel vs the discussion on timing control?

        and i think your not understanding what im sayin, if im even saying it correctly. i was running the car, the shop owner held the control to the dyno. the miscommunication may have been him hitting the "stop" before i was at redline. there is nothin stopping me from hittin 6800rpm, that I know of. i watched the tach climb to it. or maybe im not understanding what you are saying.

        or are you talking about the boost decay toward redline? i can show you my settings, but we dropped boost @ 6500 and 7000 by 1 psi @ each. no point in holding the boost that high that late if its going to go even more lean...

        ** edit** after looking even closer at the dyno's, i now have NO idea what your talking about. you can see it reaches 6800 rpm every time..


        and yes, i think its time for a rematch against dans Lambo
        as shown here: http://www.bimmerboost.com/attachmen...7&d=1298760953

        RED is todays/Jb4's control, BLUE is JB3 settings for same peak HP- which is about close to what I ran against him with before. so its hows how much more power "under the curve" I can now put down
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        No we can't. But he should really be shifting @ 6500rpm or less anyway. Click here to enlarge
        This is true... for the stock curve, heads, and cams.

        This will become somewhat of an issue with aftermarket turbos, heads/valvetrain, and cams.
      1. Terry@BMS's Avatar
        Terry@BMS -
        To raise it we would need to flash load a new limit. Which can be done in theory.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Oddjob have you posted up your ASR dynos yet? Send LM a DRF of your best run. I'd love to see them merged on a single chart just to see where we stand right now. Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        To raise it we would need to flash load a new limit. Which can be done in theory.
        Just to clarify, you mean ecu flash in conjunction?
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Just to clarify, you mean ecu flash in conjunction?
        Right. The JB4 is sitting out on the CAN bus as a node. So it could in theory initiate a reflash to the DME. Provided we could work up the code to do it.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Right. The JB4 is sitting out on the CAN bus as a node. So it could in theory initiate a reflash to the DME. Provided we could work up the code to do it.
        So this is something that could be initiated from the JB4 itself? As in the JB4 could have the ability to flash and raise the redline?
      1. SSDD's Avatar
        SSDD -
        Congrats on the new numbers LM. Glad to hear that your car is performing 100%
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Oddjob have you posted up your ASR dynos yet? Send LM a DRF of your best run. I'd love to see them merged on a single chart just to see where we stand right now. Click here to enlarge
        Im actually pretty interested in baseline runs fully modded and bigger turbo's, just to get an idea of what im working with at the lowest/stock level as opposed to actual stock baseline. i still want to get a STOCK n54 on that dyno to see how it compares