15-10-19, 11:01 PM
(10-10-19, 10:23 PM)OliZ link Wrote: [quote author=DJDLTD link=topic=25536.msg303302#msg303302 date=1570695240]
[size=1em]That's a real good point - I must have tried about 3 different cans on my Fazer for a louder sound - have even chopped 15cm off the Akrapovic can I had to get the louder deeper note. Great idea about adjusting the power range of the EXUP though - would be great to have a setting on the TFT Dash to control when the valve would open - I think ECU does it around 5000 RPM?[/size]
I have noticed a considerable power increase around the 6-7000rpm mark and I assumed that it was due to the Exup.
Mine sounds different from around the 7000 mark.
I see or hear no evidence of the Exup opening as early as 5000.
From a wheelie or power turn perspective the jerk makes the bike harder to balance and it would be interesting to have more control over that.
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Peak torque is ~7500rpm and from there you are climbing to peak power, I'd suggest that is what you are experiencing, it is nothing to do with the EXUP. The fact that you don't feel the EXUP working is exactly how it is designed, to smooth out power delivery from low revs to ~5500rpm by which time it is fully open, disabling or removing the EXUP would leave you with a flat spot at low revs and a much more noticeable kick around 5500rpm. I don't think you fully appreciate what the EXUP is doing and to sacrifice this for a different exhaust note is not something that I would choose to do especially if you want smooth power delivery which is exactly what it does. I don't think you would be happy with the result but there is only one way to find out, you could just remove the valve, put the cover back on with the cables loose and take it for a test ride.