hello guys,

i need advice on something please,

i have 1.8T and got a big upgrade by placing a new JE pistons which is now upgraded to 2.1T instead of 1.8T and still on the same old tune , the car is running so fast and no problems but timing is bad which is causing knock taking in consideration that AFR ratio is 9 on full boost which makes the car rich and the intake temperature is dropping to 18 degrees with the use of water/meth. i have my tune file .bin and would like to know how to edit it maybe to minimize the timing if that what should be done.