2018 exhaust dilemma

[podders]

Originally Posted by SimonUK

have to agree there.

What have you gents seen or heard a S1000 make with similar set up?

Just out of interest..a full system and set up must be worth 10-15BHP, No? Has to get you to over 170RWHP?

[zombie]

A 2017+ is supposed to make 165hp at the crank...  even if the full system brought you up to 175 at the crank, you'd be damned lucky to see 170 at the wheel, IMO.

I can't find out of the box stock dyno charts for a 2017, but cycle world tested a 2014 (which was 160hp) and it made just under 151hp at the wheel. 

https://www.cycleworld.com/2015/06/15/2014-bmw-s1000r-naked-motorcycle-dyno-run-video-and-performance-chart

Let's say the driveline losses stayed the same from 2014 to 2017, so minus 9hp from what BMW claims, so 165hp for a stock 2017+ becomes 156hp at the wheel and a full system that brings you up to 175 will give you 166 at the wheel.

These guys claiming 180hp at the wheel from nothing but exhaust are dreaming, IMO.

[AngeloS!KR]

Originally Posted by JaseG

A little over a year ago I had the Akra headers fitted to the bike (MY 17). The dealer was going to charge me £400+ ish for the unlock code from BMW.
BMW informed the dealer that there is no unlock code for the '17 bikes. Saved me £400+.
At the time, and until recently, there was no Power Commander for the bike either. But in this time, I have had no problem riding the bike; plenty of torque and a lovely exhale from the exhaust. Oh, and the economy increased to 47mpg (imperial).

so then would you go power commander or just leave it as is? they must have just reset the ECU then\adaptation changes.

[JaseG]

I am tempted to try the Power Commander, now that they have sorted the Engine management light problem.

As far as I remember, the dealer techs just fitted the exhaust, no reset of the ECU.

Saying that, I did have a new display ECU fitted at the same time (Do not try to fit an after market horn).

[AngeloS!KR]

Originally Posted by JaseG

I am tempted to try the Power Commander, now that they have sorted the Engine management light problem.

As far as I remember, the dealer techs just fitted the exhaust, no reset of the ECU.

Saying that, I did have a new display ECU fitted at the same time (Do not try to fit an after market horn).

its funny you say that cause i had a friend who fried the dash on his doing the exact same thing. ill just leave mine, thanks for the tip. im just going to bite the bullet after first service and go the full exhaust and air filter. cheers all for the much needed info. fucking love this bike.

[podders]

Originally Posted by zombie

A 2017+ is supposed to make 165hp at the crank...  even if the full system brought you up to 175 at the crank, you'd be damned lucky to see 170 at the wheel, IMO.

I can't find out of the box stock dyno charts for a 2017, but cycle world tested a 2014 (which was 160hp) and it made just under 151hp at the wheel. 

https://www.cycleworld.com/2015/06/15/2014-bmw-s1000r-naked-motorcycle-dyno-run-video-and-performance-chart

Let's say the driveline losses stayed the same from 2014 to 2017, so minus 9hp from what BMW claims, so 165hp for a stock 2017+ becomes 156hp at the wheel and a full system that brings you up to 175 will give you 166 at the wheel.

These guys claiming 180hp at the wheel from nothing but exhaust are dreaming, IMO.

Was at a friends place today and he has a dyno, he pulled up his database of bikes dyno'd and he had in the past had a 2015 bike in with a full Akro system and a PC fitted, it made 165RWHP with the baffle in, which he said would have robbed it of 3-5BHP.

Prior to the work, it made 155RWHP on his dyno.

Anyway, he also had this old beauty in situ, ready for a fettle, looked bloddy massive in a dyno booth...!

[BmwHarleyTriumph]

Have Akrapovic headers, stock Akra slip-on without baffle, Akra GP slipon and now Yoshimura Alpha T. No dynos at all but felt the engine is becoming too hot too early compared to all stock. So I think AFR became too lean. The Rapid Bike Easy solved the problem, plus smoother and better sound. Richer AFR made the sound and pops “richer”, “deeper”. Just want to share, hopefully coudl help