[jakes01234]

Ive seen some older posts about Bren tuning but nothing recently. I wanted to share my experience as some of you may be interested.
I brought a 2020 1250R to BT for a dyno tune and the velocity stacks. What a difference! It transformed the bike, stock 1250's now feel terrible in comparison. From the second you start the bike you notice that something is different. It fires up faster, he made it so the exhaust flapper stays open so it sounds better, and it no longer does the annoying high idle for a minute or so when its a cold start. The moment you take off you then notice the torque, i don't even think i get to half throttle and the front end starts getting lite. The moment you use the quick shifter you notice that it is substantially faster and smoother, which is crazy seeing its very fast stock.

I brought it out on a stretch of straight road to play around a little bit and I sure was impressed. I hit 141 on the speedo with no effort at all and i am shaped like a sail. It pulls so strong through the entire RPM range it literally felt like a different bike. I feel like it put this bike into a different class. I do not think Ill be able to have a stock BMW again now that I know what they can do tuned.

 

[fireman]

Sounds like you still have some adrenaline left in your system I wonder how much of the potential performance is limited by electronics from factory for safety reasons?

If I'm reading the graph correctly, 11% increase in measured torque is nothing to sneeze at, especially that it comes on earlier in RPM range. Also 9.9% increase in measured horsepower also earlier in the RMP range...

 

[jakes01234]

It’s been fun! I have a few hundred miles on it now and I can’t find a reason not to do it. It definitely gets smacked down a ton with all the modes but the dynamic pro. In dynamic pro, I almost lost it twice so I put it back into dynamic until I get more comfortable with this new power.


Sent from my iPhone using Tapatalk

 

[fireman]

It’s been fun! I have a few hundred miles on it now and I can’t find a reason not to do it. It definitely gets smacked down a ton with all the modes but the dynamic pro. In dynamic pro, I almost lost it twice so I put it back into dynamic until I get more comfortable with this new power.


Sent from my iPhone using Tapatalk

Just to understand you correctly: this tune you've got is variable based on different riding modes? Or does it kick-in in one particular riding mode?

I thought riding modes blend various throttle responses (aka fuel-to-air mix at various RPMs), electronic rider aids and suspension controls based on the mode selected. I can imagine fine-tunning hundreds of parameters to work together is probably is a very lengthy process (and expensive), that is why majority of people ride on a stock tune. Additionally variable cam shaft response throws another set of parameters that probably makes everything double more complex.

There is at least 3 different riding modes on most R1250R bikes with various engine mapping and corresponding electronic gizmo interference in each mode.

 

[jakes01234]

So it does change with the modes, It still reacts like stock levels of traction and abs in rain mode and the throttle is “damped” like normal in certain modes also.

It’s definitely a ton of programming.


Sent from my iPhone using Tapatalk

 

[r0ckrat]

I think what he's saying is that his "pro" mode DTC setting was allowing too much slip angle, so he browned his trousers...

 

[jakes01234]

I think what he's saying is that his "pro" mode DTC setting was allowing too much slip angle, so he browned his trousers...

Almost brown. Still young enough to hold it in.


Sent from my iPhone using Tapatalk

 

[Dougl]

Where did you bring it for dyno tuning?

 

[jakes01234]

Bren tuning. He is based in Massachusetts. He has handhelds for all the bmws now so he can ship the tunes anywhere.


Sent from my iPhone using Tapatalk

 

[Dougl]

Bren tuning. He is based in Massachusetts. He has handhelds for all the bmws now so he can ship the tunes anywhere.


Sent from my iPhone using Tapatalk

I assume this is for a stock bike? How do I get a tune into my bike in Nevada?

 

[Dougl]

So it does change with the modes, It still reacts like stock levels of traction and abs in rain mode and the throttle is “damped” like normal in certain modes also.

It’s definitely a ton of programming.


Sent from my iPhone using Tapatalk

Engine modes for electronic throttle Triumphs vary by the relationship between the grip throttle position (%) and the throttle plate opening (%). The fuel and ignition don’t change with engine mode. I have no idea how BMWs work or how people have hacked the ECU for custom tuning.

 

[jakes01234]

Brentuning

Check out the latest options for BMW. Our expert team is ready to help with BMW calibration, tuning and ECM flashing services for you.

brentuningmoto.com

You can either click through and have it shipped then follow the directions to load it or you can contact them and they may have a dealer closet to you that can help.

The handheld controller will come with the tune or tunes loaded on it then you just plug it into the OBD port or the weird round one of you have an older model and just follow the directions.

They have some how to videos on YouTube.

Doesn’t have to be for stock bike, can add things like air filter and whatever else you may have. Just contact them and they should be able to accommodate.


Sent from my iPhone using Tapatalk

 

[jakes01234]

Engine modes for electronic throttle Triumphs vary by the relationship between the grip throttle position (%) and the throttle plate opening (%). The fuel and ignition don’t change with engine mode. I have no idea how BMWs work or how people have hacked the ECU for custom tuning.

The bmw should work the same way.
Bren tuning seems to be the first at cracking open lots of ecus.


Sent from my iPhone using Tapatalk

 

[Chad66]

sounds like Tony the Tiger would say..GGRRreeaaatttt..but the site doesn't list anything for R1200R bikes. for my 2012 R1200R Classic I went with a Rapidbike module to smooth out the Remus headers and SC exhaust mods that came with the bike. having never ridden the bike stock I can't tell you how much better it is over stock.

 

[jakes01234]

Sounds like they should add all the models to help with any confusion. They tune all the generations from 2010 up I believe.


Sent from my iPhone using Tapatalk

 

[Dougl]

I’d be more interested in trying one of their tunes if it could be loaded with software, like TuneECU does. The cost of the hand held hardware device seems a bit steep.

 

[Panzermann]

I’m intrigued by the ‘velocity stacks’ mod. Any details/photos?

 

[Dougl]

I’m intrigued by the ‘velocity stacks’ mod. Any details/photos?

There’s an installation video on their web site.

 

[r0ckrat]

I’m intrigued by the ‘velocity stacks’ mod. Any details/photos?

- the stacks appear to be much shorter than stock.

 

[Panzermann]

Pretty impressive results! I wonder what impact there is on fuel consumption. Obviously if you really make use of that power it will be higher, but is like for like riding similar I wonder.

@mikeS - this is a farkle you need!