- Feb 17, 2019
Hello All,
Thinking of getting one one these,
Would I come across any issues at the MOT?
Thinking of getting one one these,
Would I come across any issues at the MOT?
Interesting read ,
I have that exhaust on my bike (2016 model ) and I’m really interested to see if I personally would notice the difference.
Now I’m very much a bigger rider only riding for 3 years , and this is the only bike I have ever owned , I personally didn’t notice any flat spots when I had it fitted which was after 12months of riding, - but could that be because of my “amateur” riding style ?? Perhaps ??
I'm guessing here - but the fuelling on the facelift 17+ model for euro4 may well be different on my 2017 bike than it is on your 2016 bike, producing a bigger flat spot once you swap out the exhaust. Certainly one of the things they said contributed to the extra 4hp at the time was 'exhaust changes'.
So it's not unreasonable to assume that your experience to putting this exhaust on would have been different to mine - I'm pretty sure 9/10 amateurs (in which I include myself!) would have spotted the flat spot that I did!
if I go for the cheaper PCFC option , will that take care of all the fuel & air mixture that I need ? I have no intention of adding a quick shifter so is it fair to say that I'm better of going with a PCFC over the PCV ? - after trolling through loads of you tube and web pages it seems the PCV is the more popular choice ? - the more I read the more confused I get !!!You won't want to be removing the baffle - it's loud enough with it in (105db at 5500rpm). The only question is whether you need to add an EXTRA baffle to get it through an MOT (which I did to get it to pass noise regs at Bedford). Think the H6R11 is louder than the 12 and 13 models which are more explicitly for normal road use (and euro3/4 certified). Having said that, I'd be surprised if it failed an MOT on noise - they're not as stringent as track day regs.
Re your question on power commanders - basically once you put a free flowing exhaust on the bike and remove the cat, you drop the back pressure the more restrictive exhaust gives to the engine. That back pressure helps with torque at low-medium revs. Without it, the bike runs lean, and you get a flat spot around the rev range you use the most in normal riding (4-6k).
So a Power Commander is a little electric box you plug in that adjusts your fuelling to take account of this. PCFC and PCV are two different models - PCFC cheaper and all you need if you don't also want to be fitting quick shifters and other gumpf.
http://www.powercommander.com/powercommander/products/PCFC/powercommander_pcfc.aspx
It is a significant extra cost (£200+), and Akrapovic say you don't need it, but I've ridden my bike with and without, and I'd say that you do. Factor it in to the cost of the exhaust system. It'll make your bike more rideable more of the time, as well as also taking advantage of the extra power at the top end.
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if I go for the cheaper PCFC option , will that take care of all the fuel & air mixture that I need ? I have no intention of adding a quick shifter so is it fair to say that I'm better of going with a PCFC over the PCV ? - after trolling through loads of you tube and web pages it seems the PCV is the more popular choice ? - the more I read the more confused I get !!!