big muffler, (not complete exhuast), and panel filter, you'll notice a little top end power, maybe 2-3kw, maybe a little more.
Jut got my 2005 back from the engine builders, turbo conversion, 133kw @ wheels, 310nw torque, deffinately better excelleration That's just shigh of what the current SV6 commodore motor makes, with the current SV6 weighing something like 600-800kg more then my GD3...
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