Ok, this is the first time i have needed to alter the IAC settings and i'm not sure whats what. I have put a larger billet throttle body on and now i have a few problems.
When i give it a rev in neutral(manual) revs rise very quickly now but then when returning to idle it drops way to low and struggles to recover itself.
When i go for a drive, if i come to a slow stop and put it into neutral at around 1500rpm the idle hangs at around 1200rpm and takes about 20 seconds to return to normal idle of 750rpm