Pcart

I just put this in and I went on a raod trip to York this weekend. I got aem adj. cam gears/cai/dc 4-2-1/fuel press reg/2.25 exh. I got a couple chips I was runnig my mugen. Anyway i want to know if this was right..Im doing what my speedo says is 120 and I didnt have it floored I pushed the gas more and it kept going I did that for about 4mi then backed off (no radar det) I just want to know if 135-140 in a 88 civic with 13in tires(winter comes quick in Pa.) can be done like I think I was doing. I would have attributed the error to wheel size but the stock tires were on? How fast have you guys gone?