Quote:
Originally Posted by EMTNLSS
The exhaust valves can be tuned to open and close when you want. Stealth is closed all the time. I have my Track mode tuned to where the valves stay open all the time except in 8th gear so on the freeway drone is reduced. You can tune them to stay open all the time just like if you had your fuse pulled though.
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What software are you using to access the NPP Valve tuning. I have HPtuners 4.0 and have not found it. Thx