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Message: [QUOTE="ja_cain, post: 1434516, member: 11928"] If the back pressure to boost pressure is 1 to 1 then that tells me that the turbo is a much more efficient turbo if loads and rpm are the same for both turbos. The 366sxe is capable of forcing more moles of air into the motor. The volumetric pump rate of the motor is much lower at 1500 rpm vs 2300 rpm. In other words the volume (or average volume the turbo sees when the intake valve is open) is fixed. This is assuming the post compressor temps arn't significantly higher than the 38r at the same load/rpm. That's why I think the MAT sensor is useful. Just look at the formula pv=nrt. The volume is fixed at a given rpm so it doesn't change. The change in moles and temperature of air have a direct relationship with pressure. We to have that MAT data so we can see if the compressor is blowing hot air. Please ignore my comments as half the time I don't know what I'm talking about and I miss little fine details that make my understanding fall apart. Lol! Sent from my SM-G930V using Tapatalk [/QUOTE]

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