Hey guys.
I've read through numerous threads that talk about the drive-by-wire throttle hesitation and bucking issues with the S197, and I am experiencing issues that are similar, but not exactly like these.

I have an '06 manual GT with about 17K miles, and although I have not experienced the "engine shutoff" type of hesitation at WOT, I have noticed that my car seems to accelerate more slowly off the line than it used to.

Also, I've noticed that I have to rev my engine a lot more before engaging the clutch for a hard, fast takeoff.
I seem to remember that when I first got the car, I could almost pop the clutch with very little revving, and the car would just take off.

Because gas prices are killing me, I use 87 octane.
Could this be part of the problem?
Also, I have not checked my air filter...perhaps this needs to be replaced?

Has anyone else experienced these types of issues?
Are these issues characteristic of the known problems with the drive-by-wire throttle and/or fuel pump?

 

Getting a tune with the SCT or Predator will help with the throttle response. You may also try unhooking the battery for a bit and hooking it back up so the computer resets.
Also, turn key so the power comes on but do not start the engine, then push the gas in to the floor and back up slowly. A lot of people say the this does a recalibration and they get better response. I haven't tried it because my throttle response is great but I've heard that it works.

 

Thanks!
Will try the latter two, as I don't have an SCT or Predator.

 

Check your air filter. I had a mouse make a home inside my air box clogging up the air flow. I noticed the performance was slightly down from brand new. I cleaned it out and she was back to new!