Are you aware of the manifold clogging issues?!?! if not, get a 6 pack and start searching. You will find most people have had the same problem. Mine is about due to have it's second clean out at 100,000km's then I will be blanking. If it's not this, there will be a heap of knowledgeable people on here able to help you (if they don't get grumpy at you for not searching first
) welcome to the forum mate.