| The 2.5" intake piping we've already built from the turbos to the throttlebodies is quite capable of handling the volumetric flow demand of the engine with minimal losses. The turbo inlet pipes have a completely different challenge since the air moving through them is significantly faster. 2.5" on the turbo inlet side (between the filters and turbo compressor inlet) I think will underperform 3" tubing significantly enough to warrant the challenge to make it in 3". Based on the flow required through the turbo inlets I would even venture to say that 3.5" would work even better. There's just so much air volume moving through them at high boost levels. Every psi at the compressor inlet is multiplied - even just small gains at the compressor inlet equate to large gains at the compressor outlet.
Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
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