TwinTurbo.NET: Nissan 300ZX forum - i am sure you plotted pressure vs rpm before and after right
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Subject i am sure you plotted pressure vs rpm before and after right
     
Posted by gt300zxtt on January 26, 2008 at 10:16 AM
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In Reply To He was on stock internals then too... posted by Kong ZTT GT28RS MD on January 26, 2008 at 09:35 AM
     
Message and analyzed the differences. or is this from the butt dyno?

forgive me for being skeptical or objective. it is quite possible that he moved into a more efficient range because intake piping was too restrictive, even at the lowest of rpm's. infact, dyno results would definitely show an increase in horsepower, but probably at a higher rpm. would you not agree? in some people's mind, this is a negative. in some people's mind rather, max power is the end all be all.

it is also possible, that pressure ratio was decreased at the lower rpm's due to change in volume. but again, you would see spoolup aka increase in pressure ratio at a higher rpm. if you had tested a true hypothesis with supporting data, i would whole heartedly analyze the results with you. but, otherwise it is great that you can be so resolute in your statements.

in other respects, dee could probably start looking into larger pre turbo intake piping and/or map system to further gains.

     
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