I have a 2003 Holden VY S, Series II supercharged vehicle. I purchased a 10PSI pulley and cold air intake for the vehicle from you last year. I also have a 4 inch pipe from the MAF to the pod.Currently my fuel consumption sits at 20.4L/100km which is very

If they can't access the factory tune it is because they haven't got the right software to do so. We can help them out with this if required. With a good tune, they will be able to extract more power from the car and at the same time improve fuel economy slightly. However 30rwkw from only a tune with the mods in question would be unrealistic IMHO. We can provide you with a memcal which will result in a performance gain at a much lower cost than a custom dyno tune. Your poor fuel economy could well be a result of bad Oxygen sensors which may need replacing. This is usually the main culprit for poor fuel economy in most cars.