man percision tune did the tuneup. I no for sure wires and plugs.what was done for the tune up? The shake in 6th gear is the misfire, you can feel it more at lower rpm.
You let "Precision Tune" work on a Viper engine? The same Precision Tune that are franchises like a Jiffy Lube? The ones that have kids working there just out of High School?man percision tune did the tuneup. I no for sure wires and plugs.