10-31-2018, 10:43 AM | #45 | |
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10-31-2018, 12:55 PM | #46 | |
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but I can turn off and hide my jb4 for service. How does the MP tune work when it comes to keeping it secret ?
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2018 X3 M40i - JB4 2016 X3 35i - JB stage 1 2009 335 e92 - JB4 |
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10-31-2018, 02:22 PM | #47 | |
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I just flash the stock file back on my car, flash counter stays at 0 and dealer doesn't know anything.
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10-31-2018, 02:44 PM | #48 | ||
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10-31-2018, 03:06 PM | #49 | |
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Sure you can remove the JB4 so it's physically not there but BMW can still read internal ECM data on what caused a fault or what particular MAP, IDC, Timing, etc have been. They can correlate this to a piggyback installation, they aren't dumb and are well aware of what a JB4 and other piggybacks are that operate in the grey area of factory margins and ECU trickery. The ECM's are advanced enough in these cars that pretty much anything you do can be noticed one way or another if needed. Is most cases a properly done flash tune is actually probably less detectable if flashed back to stock. This has been an age old argument where piggyback owners/vendors state this as a sales metric that is far from true. |
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10-31-2018, 05:33 PM | #50 |
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I don’t buy it, but if I do buy it I know it’s pay to play. But then again it’s hard to argue a downpipe caused an issue with the cam sensor....
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10-31-2018, 08:46 PM | #51 | |
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11-01-2018, 08:14 AM | #52 | |
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Didn't someone say bmw wanted to void a warranty because of an air intake ? Im not sure we heard the final outcome but that to me is pure bullshit.
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11-01-2018, 08:51 AM | #53 |
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That is correct...and I think because of legal issues, he didn't comment further. I believe the repair they wanted him to pay out of pocket was in the $4K range...crazy.
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11-19-2018, 02:50 PM | #54 |
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I'm pretty impressed with the MP Stage 2 tune with DP. I totally was able to run with an RS3 at hwy speeds pretty well. He eventually pulled away from me but he wasn't able to easily do it. With an 800lb weight disadvantage, plus a passenger, I'm pleasantly surprised with my M40i.
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11-19-2018, 03:53 PM | #55 | |
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Did you get the correct DP now? Is it available to purchase yet? |
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11-19-2018, 04:19 PM | #56 | |
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I understand all dealers are different but i assume they all jump into CYA mode which is typically the case. You are lucky if you experience otherwise. My next soon to be car will be something i dont have to tune to fall in this range. Tired of the bs. (rs3) |
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11-19-2018, 04:39 PM | #57 | |
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Curious, what gas do primarily run on it? I'll be doing a mix of 91 and e85 to get 93/94 because California sucks.
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11-19-2018, 04:47 PM | #58 | ||
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The DP for the 340i (listed on ER's site) "fits", but it leaks. If you aren't OCD like me it probably won't be an issue. I should receive the new one this week or next since it's a holiday. |
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11-19-2018, 04:54 PM | #59 | ||
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If you get the DP, spend the extra cash on the ceramic. I have a big feeling this is why I'm constantly pulling so much lower end torque. While the car is running I can grab the DP and my hand doesn't get burnt. |
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11-19-2018, 05:05 PM | #60 | |||
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18 X3 M40i/ Dark Graphite/ Cognac/ MP ECU Stage 2.5
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11-19-2018, 05:25 PM | #61 | ||||
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11-20-2018, 01:16 PM | #62 |
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Mission Performance 1/4 Mile Time
I hear this time and time again. That equation is never real life. Way too optimistic. Here is yet another example of how that formula misleads people.
1320/123 is 10.73 seconds Not even close to what the car actually did. |
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11-20-2018, 06:44 PM | #63 |
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I just did some brutal all-wheel-drive donuts on a fairly new blacktop parking lot. It was glorious. Smoke was pouring from all four tires!
DSC OFF = amazing. My wife said she'd rather get it on video rather than be in the car with me. |
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11-20-2018, 07:20 PM | #64 |
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I'd like to see the video if you have it
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11-20-2018, 07:22 PM | #65 |
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18 X3 M40i/ Dark Graphite/ Cognac/ MP ECU Stage 2.5
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