To much actually, all up its costing me about 3 grand. I know that’s expensive. But the main reason I decided to go a head with it is because the GCG high flows have a very good reputation. And GCG have assured me that I will see a top end of around 220rwkw with only a small loss of 200-300rpm max in lag. To be honest that’s pretty darn good. I’ve seen aftermarket HKS and Greedy stuff do worse. Once it’s all together CEF11E will be tuning my ECU. And I have just recently purchased an Apexi AVC-R, which is still to go in. but once Its all done ill post the dyno graphs up.