[judgie]

running 48 mm throttle bodys with 120mm trumpets on my race engine, makes 149bhp@rear wheels.
need to make a air box to try and reduce the intake roar, moving the silencer oulet to infront of the right hand side rear wheel. i have to reduce the nosie to meet the sound regs i have in the class i race in. currently is 105db@3/.4 max rpm would like to get it down to 100db.
what i need is some info on airbox volumes and the boxes that will go over the trumpets.
was thinking of some tube over the trumpets like you see on most turbo set ups then running a large bore tube to a central airbox with the air intake being a scoope. inlet being outside the engine bay between the deck lid hinges, triming the deck lid so it still fits in the normal way.
any ideas on dimensions for the airbox and "logs" on top of the trumpets?
another option is seperate boxes on each throttle body with a intake in the scoopes in the rear 1/4 panel, empi style 1/4 vents.
want a cold air feed to these as at the moment i have just the open trumpets taking air from the warm engine bay.
cheers rob