Originally Posted by
Turbosystems
it's more to do with the compressor efficiency they are both yb's
They may be both YB's but...
Stock manifolds, smaller turbine, stock cams, stock ports and valve's VS better flowing manifolds, cams, ported head with bigger valves and a bigger turbine... Means the second engine will make more power at the same boost pressure.
I have no experience with YB's so maybe I'm talking crap but surely these principles apply to any engine?
Whilst the compressor plays a big part of course, the actual MAP is down to everything post compressor no?