Had a mate bring back a ported and polished Vmax throttle body from the US. Fitted and back on the dyno for a tune. I was not expecting more numbers but gained 7 HP at the tyres. The throttle response has picked up heaps. Foot down instant power the car drives heaps different. The throttle body went on a month after the cam and heads, I was surprised at the difference. Set up. Manual, W375, Cam 222 228 116 - 585/591 lift, Higgins heads, double springs, pushrods, LS7 chain, 25% under driven balancer, Vmax 90mm throttle body, 440HP 725NM. Got to love the LS3. Turn the bimodal off and the car sounds and drives as factory.