Ok, I've gone 140 before in my car. It's a 94 integra gsr with OBDI. I was tuned by Crome with I/H/E. I was thinkin that it may be the tune, but I had gone over 120 following the tuning. One night I was on an open road, decided to top my car out (god knows why) and when i hit 120 (at the very end of 4th gear), my car slowed to about 115. I thought it might be my 4th gear so I worked my way up to 120 in FIFTH. Same thing happened. It felt like a governor except for the fact that my car literally SLOWED itself (as if I'd lightly applied my brakes). It hasn't presented a problem in everyday driving, but it still bothers me, because I intend on breaking 120 mph speeds at the track in the future. Any advice? Thanks guys