My 07 GT is running sluggish and has a slight hesitation at launch. I'm tried retuning it and it didn't help. Has anyone else had this problem? If so what was the solution? I hate the thought of having to take it into the dealer.

 

do you have a tune?

if not then get a CAI and tuner and be very pleased with the results!

or take it to the dealer and tell them about it... which sucks

 

just read your sig,

try returning it to stock then back to a tune....

when was the last time the throttle body was cleaned?
i have read in other threads they can cause problems like this when they get a little dirty

 

Dawt. Check the MAF housing and maf sensor aswell.