Hi everyone . I started modifying my 2011 fg xr6t ZF 6 speed auto in october 2012 , since then my car has been to two different tuners and now I am finally happy with the way the car performs with the current mods. Mods include. PW surge tank Id 1000 injectors PW muffler delete PW Stepped intercooler 4 inch dump and cat. Standard cat back exhaust Factory air box with K&N filter Standard turbo The first workshop that tuned my car achieved 336 kw at the wheels on bp 98. After driving the car for a couple of weeks I came to the conclusion that on intial take off the car felt more powerfull but seemed to induce wheel spin with not much control and the difference between half throttle and full thottle was minimal so it only felt like I had the first half of the thottle to play with and after the midrange hit the power felt very flat I decided to take the car to wsid to see how it would perform and ran a 12.4 at 113mph with a 2.0 60ft I felt the car should be performing better with the current mods so I decided to change tuners and gave joe a call from cms. I rang cms on monday the 14th of january and they booked me in on the wednesday for a tune on united e85. I got joe to run the car up on his dyno with the previous tuners 98 tune just to see where the car is at on his dyno and the car made 298rwkw. Wednesday afternoon I picked the car up and joe managed to get 336kw at the wheels on united e85 (which I found amusing because the previous tuner came up with the same figure on his dyno with their 98 tune). Over the next week the car performed very well and the thottle is a lot more progressive the power comes on nice strong and smooth and is a lot easier to limit wheel spin when taking off as I have more control over the throttle and the car is a lot stronger through the whole rev range. The following wednesday after picking the car up from cms I took the car to wsid to see what the car would run . It ran an 11.8 at 120mph with a 2.0 60ft , I was getting wheel spin in first and second so with more grip and a better 60ft the time should come down. Im happy with the power level the car is at for now and I find it very practical for the street and very easy to drive.