I have one of the old SMC kits and it has worked flawless since I bought it. My problem is I think it may be outdated compared to the newer kits, is this true? I only run 20-22 lbs of boost with it. What gains can be had with razors kit? I see they are progressive, that means to me they come on slow as opposed to the smc I have that is there all at once. Please fill me in on this and if its worth upgrading my kit. I paid $280 for it when they first came out and was on a waiting list for awhile. Man times have changed. Thanks for any help and the only reason Im asking is because after paying $4.89 for 111 to run a race chip Im stickin with the alky that was only for the street before.