The only modifications I have done to my VE SV6 Ute are suspension and ss catbacks, I am after a bit more punch, what would Mace recommend? It' a street driven daily aswell so don't want to go to overboard just after a good setup, don't particuarly want t

Given your current mods and requirements, I would start off with one of our manifold insulators first as shown in the links below:

COLD AIR INTAKE MANIFOLD INSULATOR ALLOYTEC VZ-VE http://www.maceengineering.com.au/epages/shop.sf/en_AU/?ObjectID=1469404

25MM COLD AIR INTAKE MANIFOLD INSULATOR ALLOYTEC VZ-VE http://www.maceengineering.com.au/epages/shop.sf/en_AU/?ObjectID=6205339

These mods aside, we would also recommend an intake upgrade and a tune. FAQ - Alloytec Upgrades