Nope. I've been over that with an old member on the old forum. His car ran faster with a straight 150 shot than it did with a progressive 200 shot. Even then it was a tad slower than my car is right now. As long as it hooks and goes, there is no point in going progressive unless I'm just ramping it up to a rediculous hp level that I don't want to be at very long at all. For instance starting at 150 and ramping up to 250, over ~7 seconds of time.