VERY impressed and still am to basically pull 500 hp w/ problems. For the money I think they are a great bang for the buck. I don't know if the NA plugs caused the lags between shifts or if that's possible. I was just stating that I would like something more crisp between shifts when i'm ready to upgrade. That's why I was wondering how the Z1 stage 2 compares. Once again, my goal is solid mid 400's (I'll be pissed if I hit 470 or something cause then I'll have to go for 500 =o) ) but seriously.... your concern is noted, I hate when people pass judgement too quick as well and I apologize if i didn't write further on my conclusion.
"Be kind, for everyone you meet is fighting a harder battle" ~ Plato