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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
OK, my 'about 360whp' max v 375whp.

Probably depends on the dyno and a couple of other small factors but the 7200 is mostly out of its efficiency range at 375whp and a larger turbo at that point should be good for another 20-30hp, at the same boost levels.

I believe the small 58mm turbine exducer basically chokes keeping the compressor wheel from achieving its full potential. Takes a larger turbine to let the compressor wheel spin up a bit or a larger compressor wheel that moves more air before the turbine's hits its choke point.

I think I peaked out at 365whp at 12.2/1 AFR on a dyno where the hubs are bolted to the dyno running SC cams, ports, very large Andial C2 / S2 intercooler and the other typical goodies. Just could not get it to hold boost above .9 bar, even with a EBC locking down the waste gate.

Last edited by 911st; 07-20-2010 at 06:54 AM..
Old 07-19-2010, 09:27 PM
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