That pipe looks absolutely gorgeous. After you put a few miles on it, can you report back whether the forward exhaust exit increases the heat on your right leg/foot?Hi,
my MASS Exhaust just arrived, great attention at MASS, and very quick and less than expected delivery costs (DHL), ordered /paid it last friday, had it in hands this Wednesday noon, in Lima, Peru on the other side of the planet (!). Here a first picture, next step installing it.
View attachment 133737
Responding to your PM but will also post here:That pipe looks absolutely gorgeous. After you put a few miles on it, can you report back whether the forward exhaust exit increases the heat on your right leg/foot?
Did you go with the cat or decat version? Did you get a tune? Do you notice your bike running richer/cooler at all?
Sorry for all the questions. I'm deeply interested in this setup but want to do all my research before dropping that kind of $$$.
I'm not sure about "easy" or "cheap", we're talking about simmers here, right? Haha.Hi,
I went for the decat version. The bike seems cooler, but we are in Winter right now so it's a bit difficult to judge. I am under the impression that a bit more fuel would make her run better - but it's just a hunch from when I tuned my carb cars. There is a nice video somewhere here (black and white if i recall) of an exhaust change using a tune, that Racer definitely sounded "lighter revving".
Any way to easy read A/F ratio off the Lambda sensors? Any "cheap" tune suggestions?
You will still need one as there's only one flapper valve (located after 2 pipes merge in one) with one actuator. The other simpler approach is to remove metal cables between actuator and valve, so that actuator still works but does nothing. It's just a 10 minute procedure, there's a lot of guides on YT and you can always revert it.Will I need 1 servo buddy or 2 if at all?
Hmmm....and yet another perspective. As I also have the Comeback Exhaust (2 into 1) and don’t find it any way to be high treble (pitched) although I do wear earplugs. Those few occasions when I haven’t, I have just noticed it to be overall louder (in rumble, guessing low pitched).....due to the fact that the single outlet exists out the right front, right ear attenuation area.....anyhoo my .02 cents FWIW.....and the Original stock sewing machine sounded farty to me (but again only my perspective......
Yup.....we definitely have different ear attenuations.....and perceptions......the stock BMW R9T almost Harley like sound .....hmmm 🤪.I think it really depends and each persons perception. When I received my bike with the original exhaust, I was positively surprised about the nice and low, almost harley like sound of the boxer (my first)......