I will be doing ECU reprogram this spring, and interested in Technosquare's tuning package for G35,but I am wondering if I can raise the rev limiter to 8000rpm?Will this cause any negative result on my car? Thanks for reply

 

Well obviously there will be a negative result of raising the rev limiter to 8000, Nissan put it at 7200 for a reason, they believe that is the safe place to cut off the engine. But im sure they left some breathing room, just be sure to be careful, because if you blow your engine they will not replace under warranty.