I dont have any free mods done either other than a crushed BOV. You have 3" turbo-back, and your stutterbox I dont know if it makes a huge difference, but the 17's on my car are heavy as hell also.
_________________________________________________2005 GTO - 10.88 @ 127.942004 Flame Red SRT-4 - Stock turbo : 12.5 @ 110 -Traded 7/16/081995 Eclipse GS - Project Return to Daily Driver has begun!