Has anyone pulled the back seat out? The reason I ask is usually under the bottom portion of the back seat is nothing except frame. You could try dynomatting there as well and I bet it would help some. Just a thought.
08 G8 GT: RCR Heads, Intake manifold, throttle body, 219/232 .625/.599 109LSA, LS7 MAF, Rotofab, Kooks LTs and catted X-pipe, Solo axle backs, RCR ECM/TCM 93 tune, Free Mods
P.B. et- 11.84, mph- 120.5 w/ 1.93 60'
04 Comp G: Sold