11-20-2017, 04:59 PM | #23 | |
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I've never heard of anyone getting flagged with it. The JB4 blocks the DME from seeing higher than factory load/boost/torque values, and blocks maxed out fuel trims. The worst they can do with it is try to claim timing was stored lower but it's a weak argument because you could always blame the fuel you added. Mike |
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11-20-2017, 05:11 PM | #24 | ||
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"FWIW we can see it during what we call Fasta Data submission. Basically anytime it comes in and the car is scanned it can show up. Not saying you shouldn't use it But I know BMW is now looking for piggy back tuners."
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11-20-2017, 05:25 PM | #25 | |
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I saw cars flagged for aftermarket intakes. Very popular green F82 here on the forums. |
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11-20-2017, 05:48 PM | #26 | ||
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Damm shame cars are being flagged for something so simple as intakes now! |
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11-20-2017, 05:56 PM | #27 | |
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To get flagged for an intake unless it's really poorly designed and tripped fault codes all over the place that you're not properly deleting before going in they'd have to physically see it. Mike |
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11-20-2017, 08:26 PM | #28 |
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Anyone with the ISTA tool can run a fasta report. They look at peak fuel flow values and other min and max settings kept in there. I’m sure you could get it yourself and just run it on your own car. I for one have seen it on a number of piggyback cars and not just JB4 but also a Dinan one but those guys don’t care as they get Dinan’s replacement warranty. Nothing hides fully from getting flagged if they want to pin it on you. Pay to play.
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11-20-2017, 08:38 PM | #29 | |
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11-20-2017, 09:00 PM | #30 |
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Think you misunderstood. I was referring to piggybacks when it came to fasta resports and fuel flow values, think it was injector flow as far as I recall but its been a while. It doesn’t seem any piggyback can hide those. Flashes too you’re screwed if look deep enough or even just look at the DME but when you flash it resets fasta data so you can’t get caught that way but they will find a way when they want to.
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11-20-2017, 09:22 PM | #31 | |
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11-24-2017, 08:29 PM | #32 | ||
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Cmon mike... I've been a big fan of JB4 and still am, but you don't have to defend it that much. |
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11-24-2017, 11:36 PM | #33 |
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I had a JB piggyback on 335 and then switched to flash. There's no comparison. If I tune my m4 it will definitely be a flash.
Let's be real. The jb4 is easily detected by bmw. |
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11-25-2017, 09:03 AM | #34 | |
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11-25-2017, 09:16 AM | #35 | ||
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11-25-2017, 11:00 AM | #36 | |||
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11-25-2017, 02:30 PM | #37 | |
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An even bigger concern would be for those that use their //M as a daily driver, with no backup(s). No warranty claim processed or in process and you have a rental to pay for... zammmnnn each day would eat at your paycheck! Personally I given up hope in the JB4 as my option. Previous owners are selling and moving on to the Flash options due to the increased stability of the tunes. I'll never run meth or have need to adjust other timing, so Flash is what it is. Hex/BM3...? TBD |
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11-25-2017, 04:19 PM | #38 | |
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11-25-2017, 05:36 PM | #40 | |
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Also you can remove your JB4 and clear all faults, codes etc. But you can't clear FASTA data. So to be clear, a JB4 can be detected even it got removed. Telling something else is just not true! |
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11-25-2017, 06:11 PM | #41 | |
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11-25-2017, 06:23 PM | #42 |
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It's not a myth sprayed out by flash tuners, is just the trues.
Every piggyback including JB4 can be detected even unplugged or removed. Telling people JB4 can't be detected is just not right. |
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11-26-2017, 05:45 AM | #44 |
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I think the only thing held to be true is that you can Flash back to stock tune prior to service which should help trick the dealership and you can remove the piggyback to do the same damn thang... that's your only warrantee folks - read it and DONT WEAP!
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