I took a stock IS-F with no passenger with my stock e92 manuel with one passenger , we raced on a highway from about 45mph to 150 , we did it twice and it was the exact same result , by 150 I had 1/2 a car lenght on him , so i assume if he had a 170lbs passenger like me it would've made it a lot easyer for me but still I was faster !!