That's a fair effort trainer. Are you running on 4G wireless? Is Prometheus available in 1080 yet cos I've been hangin to see it. Going to watch MIB 3 tonight. Also heard it's a bit average but still worth a watch. Went and saw Resident evil yesterday. Wasn't as good as the previous ones but still worth a watch if your into them.
Growler injectors and a tune will get you roughly 270rwkw and you might as well chuck a high flow cat on for the money and make more power with less boost. Then you'll start to find the limits of your valve springs and waste gate actuator. When the temperature is up you'll find that you'll loose a fair bit of that power though as the stock cooler won't cope.
I have slightly less mods than you yet make almost as much power. I was told that my standard exhaust was holding me back from making any more power on the same boost. My engine also has 1 million kms on it so I guess every car is just that little bit different. I'm pretty sure my tune is fairly aggressive too as boost comes in hard and fast. No idea of the timing in it.