Do it… most MOT places tend to look the other way ! I do not know of anyone who has been stopped due to loud pipes… you have to be really unlucky to get pulled unless being a loon and giving it the beans when stationary!
My old bike had a really loud exhaust which was fun at the time. I loved the backfires. I’m a bit over that now though. It failed it’s MOT with the baffle out, but the baffle was with the bike so they put that in and passed it with a noise advisory.
Things to consider are whether you want to do track days as you’ll have to refit the stock exhaust to get through the noise test and also the noise might annoy you after a while.
I used to run a MotoGP style shorty carbon can on my '03 R1 and it would pass the MOT with an advisory with the db killer installed, they look nice and are light but the noise eventually got on my nerves after a few months of riding without earplugs though, maybe if you always ride with earplugs the noise won’t be an issue for you.
Then I got a stock can for it and now it starts quicker from cold in the morning, runs better at low/mid range revs, at high revs the exup valve kicks in anyway letting more gases through so…meh.
I run a stock air filter and don’t have a dyno setup power commander on my bike but it seems a lot of faffing about and £££ for a minimal power gain at the top end of the rev range.
I never got pulled over by the police when I used to run the loud can without the db killer but I made sure not to be above 4k rpm when I was going past a police car or bike.
>Worth there risk? Up to you really.
>What’s the penalty? no idea, I never got a penalty for it.
>I know it’ll needed to be changed back for the MOT. You could fit the stock cans or fit the db killer for the MOT and take the advisory “loud exhaust”.
Check if the can has “not for road use” etched on it as some MOT places can kick up a fuss about it.
I asked the same question to a policeman last year. This is the response;
“Alright mate, sorry for the late reply. Tbh a lot of cops don’t know what there looking for and that inc traffic cops. Most of the time they well look to see if it has a baffle/DB killer in it. Cant speak for all cops but would like to think you will be fine mate. Even if the worst came to the worst you will be given a VRDS (vehicle defect rectification scheme) form, which basically means you will have have to put standard exhaust back on get the bike mot’d and take the mot to a cop shop, then just change it over to the new one again. But as I say mate they will have to be a right fecker to go down that road.”
I done the Bike safe course with the Met Police on a GSXR750 with a full Titanium Yoshimura Japan Race Exhaust, it sounded like thunder and popped and flamed on the over run, the copper i was with said it sounded Lovely!! lol
Firstly thanks all for your comments. Appreciated as always.
Wise … no sheep, but rabbits are always smiling !!!
I’ve checked and as the can is bespoke made, it DOES NOT have the “for off-road use only” label. Yippee!
I’m just waiting to see whether it can be installed WITH or WITHOUT the cat. I’m aware from Wise (he who likes to contact me off-line … wink wink) that removal of the cat will lead to additional expense …
The response to ‘cat or no cat’ will then lead to my decision.
“I’ll have to check where the cat ends… mine has never had one since I’ve had it … so will look at the original pipes and where cat starts and finishes and then let you know … might not be until tomorrow as bike in workshop a few miles away”