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  1. JB4 error code?

    Yes I have an aftermarket intake. Thanks for advise
  2. JB4 error code?

    Anyone know what the other error codes mean? I know what the 180001 code means. Thanks
  3. 2022 X3 M40i B58TU

    Upload your logs to https://datazap.me/
  4. 1 FAST SUPRA EASTER SALE - NOW LIVE - ENDS 4/15

    Do your P2UNED A90 / A91 MKV SUPRA LIGHTWEIGHT BRAKE kits fit on a 2023 BMW M440i xdrive with 19ā€ wheel? Any discounts here?
  5. P2uned Big Brake Kits - Affordable Options and Almost 40 LBS of unsprung weight savings!

    Do these fit on BMW M440i and 340i xdrive?
  6. JB4 Maps on 93 Octane

    My autoboost redux is already at 70, need to go higher to 75?
  7. JB4 Maps on 93 Octane

    So I ran some 0-60mph times. Could someone look at run 2 of this log? Is it even possible that I got a sub-3 second run? Or did JB4 glitch? I realize that this isnā€™t as accurate as a draggy. Thanks https://datazap.me/u/gryph8n/log-1710283281?log=0&data=1-4
  8. JB4 Maps on 93 Octane

    I re-ran the map 6 values listed above with better fuel. https://datazap.me/u/gryph8n/log-1710202479?log=0&data=1-4
  9. JB4 Maps on 93 Octane

    looking like my map 2 is okay? What psi ramp up do you recommend? https://datazap.me/u/gryph8n/log-1710201307?log=0&data=1-4
  10. JB4 Maps on 93 Octane

    Yes Iā€™m finding out that fuel source is important. Just limited in what is available close to me. So for 5k+ on this map, maybe go to not more than 4.2psi and taper to 3.0 by 7k or just keep flat?
  11. JB4 Maps on 93 Octane

    Running a different fuel source at high altitude. Had to adjust my boost pressure down. How do these logs look? What happened to my WGDC the first pull? Thanks https://datazap.me/u/gryph8n/log-1709770537?log=0&data=1-4
  12. GR Supra 101: Routes to big power

    Yes I already have an Evolution Racewerks 200 cell downpipe but was wondering about Leviathanā€™s clam that ā€œvirtually all exhaust systems reduce down to 3.15ā€ to connect with the factory Downpipe.ā€ And whether that is solved with my 4.5ā€ downpipe or needs a full exhaust to not limit flow?
  13. GR Supra 101: Routes to big power

    Yes I already have an Evolution Racewerks 200 cell downpipe but was wondering about Leviathanā€™s clam that ā€œvirtually all exhaust systems reduce down to 3.15ā€ to connect with the factory Downpipe.ā€ And whether that is solved with my 4.5ā€ downpipe or needs a full exhaust to not limit flow?
  14. GR Supra 101: Routes to big power

    does your exhaust system fit a 2023 BMW M440i xdrive coupe?
  15. JB4 Maps on 93 Octane

    on the first run, I increased psi at 3500 rpm to 3.7 instead of 3.6. But got boost pressure spike at the end of the curve but not on boost 2 curve. Second run, returned to 3.6 @3500 and the spike is gone. Third run, tried increasing psi at 4500rpm from 4.6 to 4.7 but again got pressure spike...
  16. JB4 Maps on 93 Octane

    So boost is at chargepipe and boost 2 is at manifold. In theory boost 2 smooths spikes in pressure and is what ā€œmattersā€. So the boost curve could be a little smoother by upping the psi a few points at lower rpms?ā€¦but pretty close to optimal now.
  17. JB4 Maps on 93 Octane

    boost 2 looks to me to match up to pre-boost curve. How does looking at boost 2 vs boost help?
  18. JB4 Maps on 93 Octane

    I went back and adjusted boost at 6500rpm from 3.6 up to 3.7 but got throttle correction, see graph with blue circle. That pressure spike at the end is an indication of? So Iā€™m thinking that Iā€™m optimized for higher rpm range. https://datazap.me/u/gryph8n/log-1709228529?log=0&data=1-4 the...
  19. JB4 Maps on 93 Octane

    Help me understand what is happening here at 2800-3100rpm when the throttle drops way down before maxing out. Is that a function of the turbo spooling up to speed and building boost? What is happening with the engine at this time?
  20. JB4 Maps on 93 Octane

    Throttle closures at 5000rpm. First graph before correcting duty bias. 2nd graph after correcting duty bias. ColonelAdama was spot on.


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