Today I topped my car out for the first time with the 50 trim. I have a stage 1 pcm. So I'm going through the gears and I hold it down in 5th. It still pulled VERY hard above 140, like as hard as a stock SRT would pull in 3rd. It went right to 160, and started backfiring at 162mph as I was approaching redline. I was expecting closer to 170, but at least I know what it can do now. This was done on a dyno btw... seriously, it was really on a dyno and not the street.