Originally Posted by GARETH T
it'll be a waste not to run the ITB on that inlet, would look great with them on there

but as karl says a standard cosworth throttle will flow more than enough than you will ever need
what i was trying to get at with sizing is,,, that only one cylinder is drawing at any time,,,
I know what you're saying mate
But by the same token - i know we've found the limits of evo inlet manifolds and 57mm throttle bodies in the mid 4's - and on GTiR's and the like, we've had to remove the 4 ITB's and chop the end of the plenum off to make a single throttle body conversion.
I want to go single throttle body really for ease - mapping with ITB's on isn't going to be fun, especially as i've got a shot of gas to jet in as well