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XBimmers | BMW X3 Forum > BMW X3 Forums | F25 (2011 - Current) > Second Generation BMW X3 General Forum » 35i performance upgrade??

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      11-16-2012, 01:04 PM   #23
ReturnZero
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Sounds awesome, I've been itching to pull the trigger on the JB for a while now. Maybe I'll have to just give it a go.
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      11-16-2012, 01:05 PM   #24
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How is power delivery with the JB? Everything smooth? Any crazy peaks or anything in the curve?
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      01-19-2013, 04:45 PM   #25
bulldog x6
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Ive got a jb3 n55 stage 1 and USB cable for sale - works perfectly on the x3/x5/x6. PM me if interested, asking $320 shipped.
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      01-19-2013, 04:57 PM   #26
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Anyone do the BMW factory ppk to maintain warranty? Dealer said they have no idea how to do if it isn't an orderable accessory on the build sheet.
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      01-20-2013, 01:59 AM   #27
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My dealer offered the option to me but suggest that I should wait for potential options from more reliable tuners because the OEM PP is ridiculously overpriced.
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      01-21-2013, 08:56 PM   #28
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I wasn't aware that the performance upgrade was available for the X3 at the dealer... does anyone know if this upgrade is available and if so, has anyone evaluated the performance?
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      01-21-2013, 09:02 PM   #29
ReturnZero
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Quote:
Originally Posted by terrytnt View Post
I wasn't aware that the performance upgrade was available for the X3 at the dealer... does anyone know if this upgrade is available and if so, has anyone evaluated the performance?
I didn't think it was available for the F25...
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      01-22-2013, 12:30 PM   #30
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I'm a new member so I can't pm you right away. I will take the jb upgrade from you if possible
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      01-22-2013, 12:33 PM   #31
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Jb $300 shipped

Quote:
Originally Posted by bulldog x6 View Post
Ive got a jb3 n55 stage 1 and USB cable for sale - works perfectly on the x3/x5/x6. PM me if interested, asking $320 shipped.
Can you email me please. Crashnbrn5@aol.com
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      01-27-2013, 01:20 PM   #32
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Hey what is your opinion on the jb N55 stage one? Is the difference worth it? I assume before service you remove it ?
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      02-03-2014, 11:52 PM   #33
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A bust

For all concerned about the Jb3. I had problems with mine. 2 different installers, 2 different juiceboxes... Drivetrain malfunction. But when the error message was off. The x3 was very fast. I was so happy with it. It was the perfect SAV, 0-60 5 seconds flat. Too bad for the error messages, which by the way slowed the car down substantially. I had to sell the unit and go back to stock. Oh and Terry and I had several email convos. We couldn't troubleshoot it.
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      02-09-2014, 02:48 AM   #34
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mines been working great for about 5 mo's
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