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Titanium Exhaust system Akrapovic for BMW HP2


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xabi007

Sat Jun 20 2009, 04:04PM

Registered Member #120

Joined: Wed Jun 10 2009, 08:33AM

Posts: 8

Hello,

Does anybody knows if the HP2 has real better performances with the Titanium Exhaust system Akrapovic from HPN? : http://www.hpn.de/english/english.html

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xabi

Warthog

Sat Jun 20 2009, 06:11PM

Warthog

Registered Member #48

Joined: Tue Jan 20 2009, 04:53AM

Posts: 13

Generally, when you replace the OEM header/cat system, you get more high end power as the engine can breath better at higher rpm. The dyno charts I have seen from and Remus systems show a loss of low end power until you hit ~3700rpm. You may have to install a air/fuel controller to really take advantage of the system, and not run it too lean. In my opinion, the HP2 has plenty of power. I'm more interested in the lower weight of the aftermarket exhaust systems - and their good looks.

Warthog
TeutonicChronic

oldfool

Sat Jun 20 2009, 09:23PM

Registered Member #59

Joined: Fri Jan 23 2009, 10:09PM

Posts: 4

I have the hpn akra system on my bike. Worth every penny. There is a difference..............Richard

richard schulwitz

oldfool

Sat Jun 20 2009, 09:26PM

Registered Member #59

Joined: Fri Jan 23 2009, 10:09PM

Posts: 4

I forgot to mention if you check adv rider bobby of bmw atlanta has done the dyno before and after.

richard schulwitz

xabi007

Tue Jun 23 2009, 05:47AM

Registered Member #120

Joined: Wed Jun 10 2009, 08:33AM

Posts: 8

Thanks for the answers. I have been searching in advrider, but I was unable to find the info of the dyno of the akrapovic system. Would you have a link?

xabi

Joerg

Wed Jun 24 2009, 04:35AM

Joerg

Registered Member #119

Joined: Tue Jun 09 2009, 03:52AM

Posts: 4

Hi there,

I have the Akra from HPN on my HP2.
Absolutely agree with Richard it's worth every penny and there is a big difference.
Furthermore the aspect to have 4,5 KG less on board.

In connection with Rapid Bike you will get 130 Nm at 5400 RPM.
My recommendation - MTEC near Muenich.

http://www.m-tec.org/html/hp2_enduro.html

Regards Joerg

Joerg

Joerg

Wed Jun 24 2009, 04:37AM

Joerg

Registered Member #119

Joined: Tue Jun 09 2009, 03:52AM

Posts: 4

Forgot to mention there are some Dyno infos availabel @

Cheers Joerg

Joerg

xabi007

Wed Jun 24 2009, 01:01PM

Registered Member #120

Joined: Wed Jun 10 2009, 08:33AM

Posts: 8

I've bought the complete Akra system from HPN. I'll install it tomorrow. I'll keep you advised§
Thanks.

xabi

xabi007

Sat Jun 27 2009, 03:33PM

Registered Member #120

Joined: Wed Jun 10 2009, 08:33AM

Posts: 8

Now it's on the bike. Beautifull system with great sound. Perhaps a little bit too loud. Does anybody knows what the loss of power/torque is with the db killer on?Do you, guys, use the db killer?

xabi

xabi007

Wed Jul 01 2009, 01:57PM

Registered Member #120

Joined: Wed Jun 10 2009, 08:33AM

Posts: 8

Since I have installed the Akra system, the engine shows some power cut during the accelerations. Does anybody has an idea?

xabi


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