Thanks guys for all the input, i'm not looking for massive gains in power, it might say 313 but in reality its not that at the wheels, i was hoping to gain about 10-15 or even 20 at a push, iv'e been driving for 37 years and owned 40+ cars some quicker than the z but its not why i bought it, i like the look and the fact that there's not that many around, isn't that why most of you guys bought one? yes i have not done any track time, or advanced driving but my driving skills are on a parr with most of the guys on the forum thats not being flash or dissing anyone just fact as i see it, i like the forum a lot and the good vibes from everyone nuff said