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  • RSL's Avatar
    Yesterday, 03:57 PM
    Hoping to get some discussion going on the finer points/peculiarities of tuning scaled (3-column) MAP bins. I'm messing with my first one and while it's proving easier than pushing INA0S over ceiling to get 20psi, it brings to light some things your don't see in an unscaled map. For example... I've been trying to smooth out an MAF "dip", for lack of a better word. That's exactly what it looked like to me at first, but all evidence to the contrary. It mostly bothered me since boost control uses it, the dip was smack in the middle of coming up to target and seemed pretty severe. It even fell as boost/RPM increased, but most often, it would stay static for a few hundred RPM and then began to rise again. You'd expect the slope to change as the scaling started reporting lower data, but it seemed excessive. Boost, boost target, WGDC MAF (g/s) (red): After messing with some things, I decided to change my spool mode RPM. It was set for 3000RPM, which also happens to be break points for all kinds of other stuff, so I wanted to push it out of the way to eliminate it as a factor as I moved forward. I upped it to 3300 RPM and, lo and behold, the spot where MAF dipped moved up with it and the start of the "dip" became even more pronounced. The light bulb finally came on. The usual values passed around for 3-column scaling start it ~10psi, so the scaling starts during my spool (somewhere around 2700-2800 RPM depending when I floor it), BUT logs say that scaled boost doesn't take effect until spool mode ends, no matter where that is. jyamona@motiv martial@mhd, there is either an undiscovered MAP (spool) table somewhere or the scaled logic just isn't active during fuel mode 20. Not exactly a crisis, but noteworthy. So, for the time being, I moved the spool mode below the 10psi area (2600 RPM) and the sizeable deviation at changeover to scaled is gone and/or at least in a less crucial area. The "sag" remains due to the scaling and will change with boost/tuning from here on out, but for now, once its hits ~19psi, MAF (purple) comes up and stays pretty linear after that. Maybe everyone knows this already and I'm way late to the party, but I sure didn't find much of anything on scaled maps, so I wanted to get a bit more in-depth discussion going...or at least have a place to post when I get hung up or come across something interesting with it :D
    5 replies | 291 view(s)
  • 93siro's Avatar
    Today, 05:17 AM
    1 replies | 152 view(s)
  • Chris@VargasTurboTech's Avatar
    Today, 01:44 PM
    Hey everyone! Extremely excited to post a little more data on what we're doing over at Vargas Performance Group. We're testing a prototype hpfp system, and simultaneously testing control over it. Our testing started with normal E85, then Tony switched to E98 to really put the fueling system through its paces. Disclaimers/Info: -"proof of concept" prototype hpfp system -prototype is called "the prototype" because it's not ready for production, meaning we have significant work to do in order to turn this into a product ready to sell, if ever -indicates that DI only 600+ whp is possible on stock injectors -stopped log at 6300 due to auto transmission (have other logs revving higher, fuel pressure & A/F is still good but those weren't the glorious dyno this is) -Rail pressure was much smoother when we used higher targets, there is some control system learning that occurs -this dyno was done with no learning Run Data: Boost: ~28 psi Timing: ~9* Fuel: E98 Low Pressure Fuel Pump: Fuel-it! Stg 3 High Pressure Fuel System: Prototype Port Injection: None Methanol Injection: None Future Plans: -More DI only testing and prototype development -Examination of feasibility for production type configuration/implementation Take Home: -There is room to run over 600 whp direct injection only -Injectors and injector window is not an issue yet -Vargas continues to innovate and push hard
    1 replies | 9 view(s)
  • AdminTeam's Avatar
    Yesterday, 09:51 PM
    RicardoNea, we appreciate you taking the time to join.
    0 replies | 142 view(s)
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    Yesterday, 08:38 PM
    Welcome Prototype007, take a look around, I think you will like what you see.
    0 replies | 133 view(s)
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    Yesterday, 08:41 PM
    ZoeToro94, we appreciate you taking the time to join.
    0 replies | 132 view(s)
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    Yesterday, 08:58 PM
    ClariceDav, we appreciate you taking the time to join.
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    Today, 05:33 AM
    AthenaODon, we appreciate you taking the time to join.
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    Today, 06:57 AM
    Welcome to a real enthusiast forum RosemaryMu.
    0 replies | 77 view(s)
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    Today, 09:54 AM
    Estella06Q, we appreciate you taking the time to join.
    0 replies | 64 view(s)
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    Today, 09:42 AM
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    Today, 08:45 AM
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    Today, 08:44 AM
    RaymundoTe, we appreciate you taking the time to join.
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    Today, 08:28 AM
    Hey CleoChaney: :text-welcomewave:
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    Today, 08:21 AM
    EnriqueBen, we appreciate you taking the time to join.
    0 replies | 52 view(s)
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    Today, 12:07 PM
    Welcome LyleLance2, take a look around, I think you will like what you see.
    0 replies | 49 view(s)
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    Today, 02:53 PM
    EdgardoMan, we appreciate you taking the time to join.
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  • Den*'s Avatar
    Today, 02:51 PM
    Den* replied to a thread Motiv single turbo questions in N54
    an yreason of using water cooling in WG?
    7 replies | 357 view(s)
  • Traf's Avatar
    Today, 02:36 PM
    Great ! more info please.
    1 replies | 9 view(s)
  • jyamona@motiv's Avatar
    Today, 02:22 PM
    Original double barrel shotgun wouldn't play nice with the DME. This setup looks like it does.
    84 replies | 2464 view(s)
  • TwistedTuning's Avatar
    Today, 02:18 PM
    Just saw the other thread after I posted. So it's not a stock system. So what exactly is he proving? That the hpfp needs to be upgraded to support more power without PI? I'm pretty certain this was known for a long time. Or am I bugging?
    84 replies | 2464 view(s)
  • jyamona@motiv's Avatar
    Today, 02:14 PM
    "Prototype" hardware for the HPFP, Fuel-It Stg 3 LPFP: http://www.bimmerboost.com/showthread.php?76836-VPG-Cracks-650-whp-Direct-Injection-Only&p=716284
    84 replies | 2464 view(s)
  • TwistedTuning's Avatar
    Today, 02:11 PM
    Is it new hardware or upgraded hardware? Because multiple posts says it's stock hardware. But you're saying new hardware. Just wondering which is the truth?
    84 replies | 2464 view(s)
  • Den*'s Avatar
    Today, 01:50 PM
    well, i was so close to finalize tuning, but !@#$ silicone lines... just blown up:) i have stainless steel lines, it will take some time to setup it again. any recommendations on stainless steel line setup? I have 4AN fittings and 10m of SS PTFE hose
    1065 replies | 63317 view(s)
  • Chris@Boost Concepts Inc's Avatar
    Today, 01:24 PM
    that would be for the LT1 DI based motors.
    84 replies | 2464 view(s)
  • ajehoti's Avatar
    Today, 01:21 PM
    ajehoti replied to a thread Motor build in N54
    Anyone else have some insight?
    18 replies | 1004 view(s)
  • bigdnno98's Avatar
    Today, 01:12 PM
    bigdnno98 replied to a thread MOTIV Built N54 Shenanigans in N54
    LMAO!!!
    77 replies | 5189 view(s)
  • Chris@VargasTurboTech's Avatar
    Today, 01:10 PM
    Looks good Joe. Congrats on the birth of your son, take your time and spend it with family. All things N54 will be here when you're ready. Best, Chris
    77 replies | 5189 view(s)
  • pobudz's Avatar
    Today, 01:07 PM
    pobudz replied to a thread MOTIV Built N54 Shenanigans in N54
    btw, sorry for the delay guys. My wife had our son this weekend and we're working with Jake to re-do some things on the current maps so it's easier to re-tune when I hit the dyno. Stay tuned for a ton of media once the car is done. Feel free to check out pobudz or @boreham_motorsports on IG until I can update this thread again.
    77 replies | 5189 view(s)
  • Msport335's Avatar
    Today, 01:05 PM
    am i able to get away with the snow performance stage 1 kit?
    120 replies | 6680 view(s)
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