I have a 95 Vmax 600 I bought new, 6500 miles and still going strong. I had the oil pump recalibrated at Bender racing at 1500 miles. Huge improvement. Steer clear of twin pipes, the guys at Bender said pipes were a waste of $$$, and they'd heard of lots of blown cylinders from twin piles. Also rejetted with a clutch kit, and mileage improved to the same as my buddies SXR600. Before it was terrible, about 8 mpg. Now it is 11-12. We are gallon for gallon at fill ups. Note: My Vmax is for sale in the classifieds, I bought a 2003 Viper ER at the end of last season.