Moderators: IMOC Moderators, IMOC Committee Members
I'm quite happy with the sound and everything but... between 2-3000 rmp I'm getting a very loud exhaust note, almost sounding like a huge vibration which im not too keen on 
. Is this normal? I heard there was something a few people cut off as it interfered with this system but i didnt seem to find anything like that whist fitting it.....- 3000 rpm, and again in the power band from around 4500 to 6000 rpm
I am a fully signed-up member of the "rev for no reason" crew or should that be Krew! If you want I will try and get a recording of it.!! (eventualy).. and ive never heard a noise liek that from such a innocent looknig system 
I'm getting some little backfires too which i do actually love! Just seems such a mental noise for 2-3 (which is the most used in eco driving 
) Sounds really good at higher rpm though for sure! i find the exhaust sounds better the hotter it gets. 
"Manly" between 2.5k (Raspy) to 3k (rasp/boom). If you feather the throttle, whilst eco driving, it's not 2 bad, and I have found you can avoid it most of the time, like when I gave my mum a lift, by changing gear at the appropriate time. It's not the best companion on a long trip .i love it now i can make it properly pop on command now haha yeah but if you get the revs wrong you get the horrible drone ! ](./images/smilies/eusa_wall.gif "Brick wall"){kind=small}