A T3 and T4 housing are in turn bigger flanges (apertures). So yes they have potential to flow more, but this is also limited by the A/R of the housing, and also the outlet size as well as the turbine size/design.
A T25 with the correct set-up can achieve 500-600bhp.
Re: Highest power and boost
[Re: technics]
#1481641 31/03/201419:0531/03/201419:05
As above, T25 and T3 flanges don't have a major influence on performance up to 500-odd bhp.
However, a very big non-performance related minus against T25 flange manifolds is that they limit you to very small number of turbochargers. The most turbochagers by far have T3 flanges.
Re: Highest power and boost
[Re: technics]
#1481661 31/03/201421:0931/03/201421:09