Good question. I will probably end up trying a slip on as well but will take it off if it hurts fuel economy. The improvement in low end torque that is shown on the dyno print outs makes me think that fuel economy will get better. Especially if I can gear my average cruise rpm down closer to the first torque bump at 5,800 with a bigger front sprocket.I am looking at the Two Brothers M-2 Black exhaust. Can anyone that has one tell me if it has hurt the mpg at all?
I've got a 2Bro's coming in, most likely tomorrow (it cleared customs on Friday).
I've been keeping track of my mileage on Fuelly (WeeBR). Last tank was 2.9l/100km. I imagine the first tank after the can is installed will be less while I get my hoon on. But the police in this town take a really dim view of pipes/cans so I'll be trying to keep the racket to a minimum, which 'should' increase the mileage.
When I'm riding for mileage I tend to shift around 4500, and run around in [email protected]/h (3500rpm). The bike is on the edge with that riding style and I can't see the 2Bro's significantly changing those figures and I sure won't be dialing it 'down' anymore than that.
So keep an eye on my Fuelly.
Well I'm gong to assume the one dyno chart (No Tip, no juice box) is a 'non reset' CBR and I'm kind of liking the couple extra pounds of torque down low. I dunno, we'll try it out and see. I guess thats why their isn't a juice box for the CBR, theirs basically no difference with and without.You may want to at least disconnect the battery in order to try to reset the fuel trim adaptation if not go through the whole rigamaroll of jumping connectors as outlined in the Thai reset video.
I ordered mine from Motorcycle Gear.com (New Enough). I ordered the plain aluminum. I got a call from them saying that 2 Bros was backordered on some part and that it may be up to 3 weeks before their back in stock. New Enough (these guys rock) emailed me and said they'd ship the Black Aluminum for the same price as the regular Aluminum. HELL YA!Where did you order yours from? If you can let me know how loud it is that would be great. I want a better sound but i dont want it to say "look at me" to the cops.