Hello, I have my mind set on getting a Carbonio CAI first, but I was wondering---are there any other helpful (HP-wise), relatively inexpensive mods to do (under $400 please, I am still in high school and do not have a real job yet, so I try to keep costs down)? Also, I was wondering if there was a new diverter valve out there now that beats previous ones as this thread's last post was in 2008. Any help would be greatly appreciated! Thanks in advance!