Newbie needs help (and so does the car!)

Hi Guys
Can anyone please recommend a good engine guy on the gold coast.  I just bought an AW11 that's had a 4AGE silver top transplant, it's got the big K&N pod filter and an oversized exhaust.  It (I think) has a standard (silver top) ECU.  The problem, it runs so, and I mean sooooooooooo rich, it's like the sensors are not working.  I understand the theory, but am completely S**T at the practice :).  Can anyone recommend someone on the gold coast that might be able to solve my engine woes?
 
Many Thanks
Ballzy (al)