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      04-30-2012, 08:50 PM   #1
CominAtYaBich
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Anyone have the Renn Tech tune for X5 Diesel?

Just got an X5 diesel and would like to tune it, but I haven't seen anyone give a first person review of the renn tech. I might have to be the guinea pig. The JBD seems nice for how cheap it is, but I'm not sure if I trust it...
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      05-01-2012, 09:28 PM   #2
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I have a 2011 X5D with 20k and have had the JBD installed since 5k. I take it out for service or oil changes and cannot stand driving it without the JBD! Great investment, but do buy the code clearing device as I've used it twice.
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      05-01-2012, 10:54 PM   #3
CominAtYaBich
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I'm thinking about it, I know they're inexpensive and they're actually located pretty not too far from me, but I want to trying something new for the sake of the forum too...

I heard back on the evolve tune and they're claiming they had a 335d do "329whp and 489ft-lbs to the wheels." thats seems pretty impressive to me for at the wheels power
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      05-02-2012, 07:59 AM   #4
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I've been running JBD in my X5d for about 8 months now, very solid tune. I am planning to give Renntech a try this summer, one thing worries me is when the dealer have to update the software that would be a pain.
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      12-31-2013, 10:32 AM   #5
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RENNtech Diesel Tune

Did you ever get the RENNtech remap? Any feedback?
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      12-31-2013, 11:01 AM   #6
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What happens to your warranty with the Chip?

I heard that the AC Schnitzer tune keeps your existing BMW warranty?!

On the JBD, did you guys ever had the problem that the engine goes in limp mode? I heard that should be common with that tune.
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