ZTRACING
Newbie
- Joined
- Feb 6, 2018
- Messages
- 10
- Reaction score
- 3
- Points
- 263
- Location
- South Elgin, IL
- Country
- USA
- Snowmobile
- 2014 SR Viper XTX
2006 Yamaha Apex GT (Sold)
- LOCATION
- South Elgin, IL
Have any of you tried both the SPI and EVO trail mufflers on the SR Vipers?
What did you think?
Interested in comparisons for performance differences & sound levels.
I currently have a 2014 XTX with EVO flashed ECM, SPI header & Ulmer air intake.
Thanks!
What did you think?
Interested in comparisons for performance differences & sound levels.
I currently have a 2014 XTX with EVO flashed ECM, SPI header & Ulmer air intake.
Thanks!
AftonJay
Extreme
- Joined
- Oct 23, 2012
- Messages
- 103
- Reaction score
- 18
- Points
- 718
- Location
- Northern Michigan
- Country
- USA
- Snowmobile
- 2005 Warrior, 2009 Nytro XTX and Arctic cat puma for the kids
- LOCATION
- Afton Mi
Cant speak to the EVO but i have the Straightline (SPI) muffler with their header and the ulmer intake mods and EVO reflash for intake, exhaust and 91. The muffler has a nice deep sound at idle, at mid throttle between 30-45 there is quite a bit of drone, after that it quiets down and is not what i would consider obnoxious. Cant say i actually feel any difference in performance between stock muffler and SPI one.
