Scion XB 1NZ-FE Turbo build - Toyota Yaris Forums

xnamerxx · 01-14-2011, 06:28 PM

Im pretty sure the power is giving up so early because the turbo is to small for the amount of power hes making. You can see it in the torque curve how it starts to die at 5k rpm's. Dont know the specs on his cam or the rpm range of the intake he's running but Id have to hazard a guess and say both are rated for something like 3-7.3k rpms but the turbo doesn't have the cfm to keep up.

If you look at the compressor map for the disco potato it gives up on at about 35 lb per minute with 2.2 bar. Rule of thumb is 10 hp per every lb per minute so easy math says 350 hp give or take 20 hp.

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01-14-2011, 06:28 PM	#11
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	Im pretty sure the power is giving up so early because the turbo is to small for the amount of power hes making. You can see it in the torque curve how it starts to die at 5k rpm's. Dont know the specs on his cam or the rpm range of the intake he's running but Id have to hazard a guess and say both are rated for something like 3-7.3k rpms but the turbo doesn't have the cfm to keep up. If you look at the compressor map for the disco potato it gives up on at about 35 lb per minute with 2.2 bar. Rule of thumb is 10 hp per every lb per minute so easy math says 350 hp give or take 20 hp.