How much? 
But the question I have would be this. After watching the videos of the ST engineer explain how they tweaked the ST version, with all the parts meant to work together to get the performance they intended - in regards to adding an exhaust system like this, how would it effect their tuning? The engineer had said they tuned the ECU specific to their intake and exhaust. I have seen, and experienced for myself, getting worse performance when mucking about with aftermarket parts added that changed the way a system was designed to work as a whole.
As an example, adding coilovers to lower the car, and adding negative camber, maybe even upgrading the brakes and steel brake hoses - how will it effect their electronic vectoring control used instead of a mechanical LSD? Add to that, the special steering knuckles?
I seen on one of the forums (this one maybe?), where one of the moderators were going to meet the ST engineers soon with member's questions. This should be one of the most important. What mods will not hurt the designed systems they created, as well as which will work with them, and can add performance without an adverse effect on another.
I ask this, because I made some design mistakes (built for SCCA Solo II) long ago when I bought my 2008 R32 in its early days, and not much development had been done for the car at the time. By the time, much later, that the right specs found to work were available, it was too late, and too costly to reverse. Don't want to go through with that again, and now starting with a clean slate. But, I do want my music (exhaust music, that is).
But the question I have would be this. After watching the videos of the ST engineer explain how they tweaked the ST version, with all the parts meant to work together to get the performance they intended - in regards to adding an exhaust system like this, how would it effect their tuning? The engineer had said they tuned the ECU specific to their intake and exhaust. I have seen, and experienced for myself, getting worse performance when mucking about with aftermarket parts added that changed the way a system was designed to work as a whole.
As an example, adding coilovers to lower the car, and adding negative camber, maybe even upgrading the brakes and steel brake hoses - how will it effect their electronic vectoring control used instead of a mechanical LSD? Add to that, the special steering knuckles?
I seen on one of the forums (this one maybe?), where one of the moderators were going to meet the ST engineers soon with member's questions. This should be one of the most important. What mods will not hurt the designed systems they created, as well as which will work with them, and can add performance without an adverse effect on another.
I ask this, because I made some design mistakes (built for SCCA Solo II) long ago when I bought my 2008 R32 in its early days, and not much development had been done for the car at the time. By the time, much later, that the right specs found to work were available, it was too late, and too costly to reverse. Don't want to go through with that again, and now starting with a clean slate. But, I do want my music (exhaust music, that is).
