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Originally Posted by retro_msport
And theres been some long length trumpets used to good effect in the past, hasn't there Graham 
One other thing that Graham mentioned was the second set of injectors pointing down the bodies, I remember seeing a pic of "wobbly" Walker standing at the side of an engine holding an injector rail and moving it in and out to see if there was any gains to be had.
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yep, and it seems all engines are different, some it does nothing for, others gain good power, usually at peak power, my engine was unusual, in that it gave the biggest jump in power dave had ever seen from double injecting, but not at peak power, but at peak torque, peak power was no different, and before anyone suggests it the power gain wasn't due to a lean mixture in the first place.