[XtremeRevolution]

I second the recommendation for checking your spark plug gaps and moving up to a higher octane fuel.

 

[XtremeRevolution]

I'm going to have to pull the trigger & check the plug gaps myself... I too think that my experience will be like yours, well at least I hope it will. I did the resonator delete two weeks ago & saw an improvement in gas mileage. So, here is hoping the gaps will give back some much needed responsiveness.

It has across the board with everyone that has done this. Do let us know how it goes though!

How does your exhaust sound now that you removed the resonator? Do you still have the stock muffler?

 

[XtremeRevolution]

I checked my spark plug gaps and got the following:
.022
.025
.024
.019

I changed gap to .035 and the crazy idle is completely gone.Throttle response is slightly better. Thank everyone for the post. I really think Chevrolet goofed on this one. I'm going to fill up and check gas mileage and post results later. AWESOME!!!

I'll tell you right now that the .019 plug was the biggest cause of your issues. Good work! You can finally enjoy your car!