I have had my MSDS Headers for a long time, I have not dyno'ed since adding them. Yes the car does seem to have more power and does seem to reach redline faster. These headers will not add anywhere near 30-40 hp by themselves. I would say more like 10-15 at the wheels. This is just my .02 given my track times before and after installing. They do also add a nice tone to the exhaust note, it is a very pleasant throaty sound
They are much better than just gutting your exisiting manifolds. Once you see a stock manifold and these headers side by side, you will all then wake up and see how restrictive the stockers are. Gutting the cats may be free, but I dont think its worth the effort if your looking to get larger power down the road.
95 Contour SE '01 3L 
