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FJ-09 Two Bros Exhaust


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Hmm... maybe I need the Two Bros... Was going to wait for someone to try the Arrow, but... 
I wonder if this is with or without the sound reducer. I don't think it changes much other than volume though.
This was with the 4 decibel reducer in. 
I bet it sounded awesome when you had it on the Dyno ;)
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  • 5 months later...
I installed my Two-Brothers exhaust a few days ago. I have Nel's re-flash for stock pipe. A few notes:
 
Two Brothers Sound Level
With no db reducer is very very loud. Way to loud to ride without annoying everyone.
With the 4db reducer, it was still too loud to me.
With the 8db reducer, the sound level is tolerable.
 
Performance with "wrong" flash
Even with the stock pipe flash, it rev's more freely.
Fuel milage seems worse.
Lots of black soot on end to can.
Low rpm fueling is not good. No stalls, but not at all smooth
 
I'm sending my ECU back to Nels on Monday 02-November-2015. Once I get it back, I'll update on the performance with the "correct" flash.
2015 FJ-09, 2016 1290 Super Duke, 2017 150 XC-W (primary ride), 2012 DR650
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I installed my Two-Brothers exhaust a few days ago. I have Nel's re-flash for stock pipe. A few notes: 
Two Brothers Sound Level
With no db reducer is very very loud. Way to loud to ride without annoying everyone.
With the 4db reducer, it was still too loud to me.
With the 8db reducer, the sound level is tolerable.
 
Performance with "wrong" flash
Even with the stock pipe flash, it rev's more freely.
Fuel milage seems worse.
Lots of black soot on end to can.
Low rpm fueling is not good. No stalls, but not at all smooth
 
I'm sending my ECU back to Nels on Monday 02-November-2015. Once I get it back, I'll update on the performance with the "correct" flash.
We look forward to reflashing that for you, that stock flash fueling will absolutely have the wrong fueling for your new pipe! 
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