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  • bigdnno98's Avatar
    Today, 01:22 PM
    you guys are comparing single turbo numbers to twin turbo numbers though. I single turbo will have to run more boost, and create more heat thus be more prone to knocking on pump gas than a smaller set of twins will. It's really an apples to oranges comparison.
    68 replies | 1032 view(s)
  • AdminTeam's Avatar
    Today, 01:17 PM
    Welcome to a real enthusiast forum MCarrion.
    0 replies | 0 view(s)
  • AdminTeam's Avatar
    Today, 01:12 PM
    Welcome to a real enthusiast forum HDarrow.
    0 replies | 0 view(s)
  • VargasTurboTech's Avatar
    Today, 01:03 PM
    The 91 logs were perfect. D's #1 priority when tuning that kit was safety first, everything else second, including WHP numbers. Anytime he started seeing anything in a log he didn't like he backed it down until he was happy again. I will say, it seemed we were on the verge of a fueling crash at that point as HPFP was doing its normal dippy dance. This was before we modified the rail and the pump, after that we ended up with 67X no meth with some higher octane, and again logs that kept the most careful tuner I have ever worked with happy. The last thing we wanted was a hurt motor, we did at least 500 dyno pulls and another 500-1000 street pulls on that car at power levels varying from 550-725WHP, and he still daily drives the car 30 miles to work everyday without a hint of oil consumption. I have no doubt 600WHP can be had on 93 and the logs would be happy, this is just based on the experience we had tuning that first kit. I guess time will tell.
    68 replies | 1032 view(s)
  • Terry@BMS's Avatar
    Today, 01:01 PM
    The DME does nothing at all. It just motors along like everything is fine with a 20:1 AFR. It doesn't even lower its load target. Bizarre. Fuel trims work within a +34% range whether you are using a flash only tune, back end flash + JB4, or JB4 alone. With a JB4 in the mix the JB4 also can dynamically adjust the fuel pressure return to give another 30-40% of fuel trim room.
    39 replies | 405 view(s)
  • rdeterman's Avatar
    Today, 01:00 PM
    With more fuel (upgraded HPFP) do you think those safe numbers would go up?
    68 replies | 1032 view(s)
  • Terry@BMS's Avatar
    Today, 12:57 PM
    No doubt the number can be hit, we did some 91 octane higher boost pulls on our E92, but the logs looked awful even with almost no advance. No way I'd operate the car on the road like that. Remember the dyno is only one small part of the story. Based on what I've seen so far for 93 octane I think 460whp is a reasonable limit for a 58 and 500whp for a 6466. You can push them higher but it will become less consistent.
    68 replies | 1032 view(s)
  • 135pats's Avatar
    Today, 12:46 PM
    I don't doubt for a second your ability or PTF's. I'll believe it when I see it, and look forward to being proven wrong ;)
    68 replies | 1032 view(s)
  • VargasTurboTech's Avatar
    Today, 12:38 PM
    Im not sure how everyone is ignoring 573WHP on 91 over a year ago when big turbo tuning was just getting started, and the most conservative we had run as it was first time on the dyno. I have no doubt PTF can get 600WHP on 93 with a decent sized turbo right now, if they got 573WHP 13 months ago in their first attempt at tuning bigger turbos.
    68 replies | 1032 view(s)
  • 135pats's Avatar
    Today, 12:31 PM
    600 wheel on pump is not happening right now. Need more fuel and a big ole titties turbo.
    68 replies | 1032 view(s)
  • mjmarovi's Avatar
    Today, 12:24 PM
    Right now I don't think it will happen without meth just as a fuel supplement. It's just a matter of fuel and big enough turbo to hit that on 93, but honestly I'd rather have a quicker spooling turbo and hit it with meth. I'm still not sure whether or not I want to add race gas when I start tuning mine. I'm thinking start off with 93+meth and see how far that gets me then add in the race gas. That should provide some decent 93 numbers guys seem to keep asking for.
    68 replies | 1032 view(s)
  • mark0006's Avatar
    Today, 12:22 PM
    Nice color combo.
    16 replies | 760 view(s)
  • 135pats's Avatar
    Today, 12:14 PM
    Wow, I’ve never had that happen but that is surprising and lame. So if it senses things out of hand, is its’ only reaction to pull out load, shut the throttle plate, and add in a ton of trim? I trust the DME on the fueling side, and in my opinion Cobb does extremely well in terms of avoiding fuel problems provided the tuning is sound. But still, surprising there isn’t a hard cylinder shut off or the like. But no question, auto switching to map 4 is very, very smart on your part. Most piggybacks couldn’t dream of that type of control and forethought, so credit where credit is due.
    39 replies | 405 view(s)
  • mjmarovi's Avatar
    Today, 12:13 PM
    Well now that is some good info. BTW Terry, I'll hopefully be tuning and dyno run next saturday. Going to do step by step dyno and road tuning, hopefully make a day of it assuming no issues.
    39 replies | 405 view(s)
  • AdminTeam's Avatar
    Today, 11:57 AM
    Hey DCook0: :text-welcomewave:
    0 replies | 24 view(s)
  • rdeterman's Avatar
    Today, 11:41 AM
    Buffalo Trace FTW! Now you need to find yourself a bottle of Blantons. Another great Buffalo Trace bourbon.
    445 replies | 15847 view(s)
  • Modernfuse's Avatar
    Today, 11:33 AM
    Modernfuse replied to a thread 6466 335i vs Some C6 Vetts in N54
    I can believe that it feels as good as it sounds man
    11 replies | 275 view(s)
  • Terry@BMS's Avatar
    Today, 11:33 AM
    For some odd reason, the DME alone will not limp out if AFR goes lean, I have no idea why and never found a way to fix it via Cobb or the BB flash. As far as I know that is a JB4 only feature.
    39 replies | 405 view(s)
  • mjmarovi's Avatar
    Today, 11:28 AM
    Except...it's in a Titan...LOL I wonder how much the diesel option will cost. In the american trucks it's $10-12k option depending on make. Bigger motors though and on the GM you get a kickass Allison transmission
    121 replies | 3359 view(s)
  • mjmarovi's Avatar
    Today, 11:26 AM
    You mean people actually live in the Panhandle? LOL I'm about an hour south of Tampa, never driven to the panhandle, but I'd imagine it's 5-6 hours from me to Pensacola. A real shame, cause I'd love that race.
    121 replies | 3359 view(s)
  • V8Bait's Avatar
    Today, 11:25 AM
    V8Bait replied to a thread BB Flash w/ an ICOM in N54
    Made this thread a while back, there's a screen shot of a typical log from most of the computers a few posts down. My 2007 failed with literally every Intel computer until Haswell 4th gens, but worked with 3 AMD based computers. Who knows. Regardless, still interested in a coding cable port. Old thread with a log screenshot http://www.bimmerboost.com/showthread.php?44327-I-should-be-studying-instead-I-m-KLINEing-it-up&p=495474#post495474
    9 replies | 249 view(s)
  • AdminTeam's Avatar
    Today, 11:15 AM
    Welcome to a real enthusiast forum shwnalan.
    0 replies | 21 view(s)
  • bigdnno98's Avatar
    Today, 11:13 AM
    HAHA yes. Agreed. The MSD81 is like a supercomputer, even compared to an EVO ECU. I have DSMLink V3 in my DSM and do like that quit a bit, but it's certainly no MSD81 with a JB4.
    39 replies | 405 view(s)
  • 135pats's Avatar
    Today, 11:04 AM
    If you are tuning on the dyno (where you should be), then yea for sure, agreed. But I must be frank here, a lot of people seem to be doing this by the seat of their pants. DIY single then tuning on the street more or less blind. In that scenario, you could tap 50 wideband gauges and it won’t save anyone. I hear you though… Edit: and I’m sure you’d agree that MSD81 is in another universe of nuance and intelligence than DSM ECUs. But your point still stands, for sure.
    39 replies | 405 view(s)
  • bigdnno98's Avatar
    Today, 10:57 AM
    Just to clarify, the WB gauge is not the end all solution to not melting pistons. It's just a tool, that as of right now, no one in the BMW community uses. (almost no one, Chuck LOL). It may not be necessary for JB4 guys, but it can still be a piece of mind for those that don't mind an aftermarket gauge in their BMW. I personally didn't like the idea of gauges in my BMW LOL. but I wasn't pushing it to the ragged edge with a single turbo either.
    39 replies | 405 view(s)
  • bigdnno98's Avatar
    Today, 10:52 AM
    Actually when tuning a car without a JB4, yes, you're looking at the wideband gauge while making a WOT pull. That's why the gauge is somewhere where you can see it in your peripheral and that's why the gauges have colors and things, so you don't exactly have to be able to read the numbers. I'd say that if you're going WOT and you hit 13 AFR you prob have more than 1 whole sec before you melt things but it's a good indicator to let off the throttle. After flash tuning Mitsubishis for the last 2 years, that's really all you have to go off of, and things can go south really fast. JB4 spoils a lot of BMW people. It's not that easy on any other platform unless you're running a real stand alone that will do the same things that the JB4 does for the BMW guys.
    39 replies | 405 view(s)
  • bigdnno98's Avatar
    Today, 10:48 AM
    Good point on the JB4. I sure wish you made them for all platforms LOL. I'd buy 10 right now.
    39 replies | 405 view(s)
  • 135pats's Avatar
    Today, 10:45 AM
    I doubt a wideband gauge would save you from a sudden lean out. First off, are you guys just starting at wideband readings while you do a pull? I’d rather melt a piston than stare at a gauge while going who knows how fast. Second, if you really get a serious lean condition, you’ll have what maybe a second or so to react to it? I doubt folks would be able to back off in time if you suddenly leaned out like crazy. You’d have to be 100% focused on the gauge, then digest what you are seeing and react to it instantly. If you want to tune a single and not melt things, be careful and go slowly. I really doubt a gauge is going to help much in the real world. JB4 will auto switch to the boosting off the spring if it sees things way out of whack, Cobb does very well with adding in trim and avoiding lean conditions in the first place. If it happens, it’s almost certainly the end users fault.
    39 replies | 405 view(s)
  • AdminTeam's Avatar
    Today, 10:43 AM
    Welcome to a real enthusiast forum Sackmonkey.
    0 replies | 16 view(s)
  • Terry@BMS's Avatar
    Today, 10:36 AM
    Unlike a flash tune the JB4 monitors both factory widebands switches you to map 4 (WG spring) if its lean for more than a second under boost. Which happened here. But if the vacuum lines are wrong then you're still going to over boost as essentially nothing is controlling boost. At least the throttle closed heavily to help protect the motor.
    39 replies | 405 view(s)
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