I just changed out my HE pump with a Johnson pump. Even though I thought I had no problem with my old one. Just doing some upgrades right now. Let me tell you, this car feels like it picked up a few horses. It takes off alot stronger than it did before.Its a whole lot more responsive. And the traction control lights up like crazy now. I know some of you are waiting for your factory pump to go out fiirst, but let me just say, don't wait. I think this single mod/upgrade is the difference between cars that run high 12's and those that run low 13's stock. I truly believe that the stock for stock the reason why some people are running fast and others are running slower all depends on the state of their respective HE pumps. I just went to the track this weekend and my best time was a 12.89 at 109 and I swear by my butt dyno I could smoke that time now, no doubt.