have crome and had some surging idle issues from when i did my base street tune. went and got my full tune and put down good power but now my idle is a bit high. checked all the possible fixes, no vacuum leaks adjusted the idle air screw had been cleaneed the idle air valve. its not a big deal though seeing i do not drive my car much and this is DEFINATELY NOT A COMPLAINT. just stating whats up cause with the full tune the surging idle was eliminated. all in all the car runs strong and feels much more smoother since the full tune.