Bren Tune on 2012-2016 models - BMW K1600 Forum : BMW K1600 GT and GTL Forums
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post #1 of 10 Old 03-27-2019, 10:04 PM Thread Starter
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Bren Tune on 2012-2016 models

Has anyone had a Bren Tune done to their bike? If so, what was/is your results? I have a 2014 GTL that has performed flawlessly since new. An extra 8-10 hp, 3-4 lbs of torque would be nice provided there are no undesirable side effects.

Thanks in advance!

Bruce Harris, Jr.
Burlington, NC 27215
2014 K1600 GTL/2005 Bushtec, IBA #8757
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post #2 of 10 Old 03-28-2019, 06:46 AM
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Bruce, you'll be hard pressed to 'feel' an extra 8 hp / 3 tq. I'm also skeptical of their claims. I talked with Bren a while back, asked for available data, dyno sheets , etc. from their tune of the older K1600 bikes. Bren told me they didn't have any. I interpreted this Bren response to mean 'Bren developed the tune based on computer software with hypothetical data resulting in hypothetical conclusions." Bren won't be getting any of my previously, hard earned, limited, retired income.

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post #3 of 10 Old 03-28-2019, 07:48 AM
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While 8 hp is possible on a bike with no mods, it is in my opinion unlikely. 8 hp is a decent gain from a full exhaust, and I haven't heard people with the 2012-2016 bikes feeling there was something left on the table, as with the later bikes. So I would probably take Duane's advice and look else where for hp's. It can't hurt, but that's a lot of beans for such a little pay off IMHO.

2018 K1600 GT
2009 Hayabusa
2007 1250 Bandit - sold
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post #4 of 10 Old 03-28-2019, 08:32 AM
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Don't you just hate buying stuff you can't verify. For instance here are just a few...

1) Am I really getting 12 megapixels with that new camera? How can I count megapixels to make sure?
2) Is that vacuum cleaner really 7HP. My 24" planer is 7HP and the motor draws 30 amps...How do they do it with only 6 amps? One of my air compressors also says 7HP and draws 14 amps.... someone is lying.
3) Am I really out of data? Did I loose count on my gigs?
4) How do I see a megabyte. Is it easier to count gigabyte?
5) Ram????Is my computer really faster or is that a gigabyte thingy?? How to count Ram. How do I compare speed?
6) BMW claims 160HP on the K1600. No one else has verified that due to not using a dyno that reads crankshaft HP.
How can we be sure?
7) Will the Bren tune be erased with a dealer software update?? You cant see that it is still there so how do you know? They should have at least a little green indicator light that verifies its existence.

I don't know what to think about the Bren tune. Your wallet being lighter should help performance at least little though???
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post #5 of 10 Old 03-28-2019, 09:18 AM
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The only real benefit I see to a Bren tune is fixing the so called "throttle lag" on the 2018 and newer bikes.

That of course is only for people who have a problem with it.
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Freedom is the miles I'm rollin' on!

I'm ridin' a 2014 K1600 GTL and I am loving every minute of it!
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post #6 of 10 Old 03-28-2019, 09:40 AM
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Why would you need more HP on the 2012-2016 K1600 ? Nothing wrong with the throttle on those. Send that money to me and I will put it to good use

I use to be TOMB now I am Booger Man
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post #7 of 10 Old 03-28-2019, 09:48 AM Thread Starter
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Thank each of you for your responses. Now I have one less thing to worry about. Getting my RDL on order and possibly installing a HealTec shifter should finish my farkling projects.

Bruce Harris, Jr.
Burlington, NC 27215
2014 K1600 GTL/2005 Bushtec, IBA #8757
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post #8 of 10 Old 05-21-2019, 09:02 AM
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I did Bren tune on my 2015 GT. Always felt like the engine lagged above 5k at WOT.

Feels like a new bike. Pulls hard to redline. Very responsive throttle.

White 2015 K1600 GT
Mods: Ilium Engine bars, C4 side case protectors, Adaptiv TPX radar detector/laser jammer

Last edited by cutterman; 05-21-2019 at 10:25 AM.
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post #9 of 10 Old 05-22-2019, 11:25 PM
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I did Bren tune on my 2018 K1600B with 1,000 mile on it. I just hit 6800 miles and love every mile. The Bren tune really woke up the bike as far as throttle response across the board. It got rid of the lagging feel off idle. I heard the later model K's the throttle was 39% less responsive than the earlier years and that the WOT was only opening 75%. I am glad I did it, but it is your bike your choice. I didn't expect more horsepower from the tune, just to cure the throttle lag. But is does feel stronger across the board via my butt dyno.
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post #10 of 10 Old 06-07-2019, 01:46 PM
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I did my 2016 recently and made a short tutorial video on the process. I can say that the difference in performance was significant for me and worth the cost. It truly woke my bike up, made the throttle much more responsive, smoother and removed all the flat spots in the RPM range. I'd strongly recommend using the handheld tuner from Brentuning as it allows you to install the tune without disassembling the bike and mailing the ECU to Brentuning.

Here's a link to the video.

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