So,
Here are my before and after power and torque charts after fitting a full, big bore, Akra system and the Motohooligan secondary butterflies.
Previous chart is with slip on Akras and the Motobox fitted. I think that before this the standard bike with only Akras and no Motobox was showing about 115bhp.
Over all power is up from 121bhp to 124bhp and torque up from 74ft-lbs to nearly 76ft-lbs.
HMRacing said before hand that they didn't expect to see much improvement in bhp as they have done a lot of work with the bikes in the Battle series and have never seen the full system really add anything but somehow the charts belie the difference it feels to ride. It definitely feels like it want to rev out more but this might be to do with the sound it makes?
So in reality the cost of a full system is not really worth it for the power gains over the slip on system. But the value of all that pipework going blue, purple and gold..........priceless!!!:lol:
OLD CHART MOTOBOX AND SLIP-ON ROUND AKRAS
NEW CHART MOTOBOX, SECONDARY FLIES, FULL AKRA SYSTEM

Here are my before and after power and torque charts after fitting a full, big bore, Akra system and the Motohooligan secondary butterflies.
Previous chart is with slip on Akras and the Motobox fitted. I think that before this the standard bike with only Akras and no Motobox was showing about 115bhp.
Over all power is up from 121bhp to 124bhp and torque up from 74ft-lbs to nearly 76ft-lbs.
HMRacing said before hand that they didn't expect to see much improvement in bhp as they have done a lot of work with the bikes in the Battle series and have never seen the full system really add anything but somehow the charts belie the difference it feels to ride. It definitely feels like it want to rev out more but this might be to do with the sound it makes?
So in reality the cost of a full system is not really worth it for the power gains over the slip on system. But the value of all that pipework going blue, purple and gold..........priceless!!!:lol:
OLD CHART MOTOBOX AND SLIP-ON ROUND AKRAS
NEW CHART MOTOBOX, SECONDARY FLIES, FULL AKRA SYSTEM
