Not sure what your experience is with an actual gtir , if you've owned one, ran it with the stock 28 turbo, or what engine manement you've had eg jwt, cal, aem , piggy etc. when I had my gtir in th...
I felt the same way when I upgraded to BC cams stage 2 on t28.
Its great on top but for driving around town it sucks!
With the stock cams it used to breaks the tires loose at the lower rpm band too.