Well I just installed this myself with my buddy. It was a little more involved than I thought, but then reading the instructions again seemed simpler than when we actually did it. Anyways set aside a good 2 hours or so to install it.

As far as the outcome of the regulator I did feel a difference! Stock was at 40psi and we kept testing it up from 46psi and I found that 48 was the best for me. It definately gave me an improvement seat of the pants wise, even though I did this together with the throttle body bypass. I can tell you that I think it is worth the money to buy one. I am pleased overall with this product.

 

thats cool, sounds like a worthy mod.
i am most likely going to install one when i get slp runners.

 

The diff you noticed was probrably from the afpr itself, the only time you note a difference with the bypass is after the engine is nice and hot or its really hot outside cause the TB now stays cool as a cucumber....