Opinion?
#3
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well my current setup is
GT28RS
Front mount
MSPNP 90-93
Built bottom end and some head work
deleted AFM
straight pipe exhaust
HKS SSQV
Innovative LC-1
I would like to acheive 350 - 400 farther down the road after tranny and rear end swap.
Am I currect when I say the GT28RS stops flowing efficiently at 15 PSI ?
GT28RS
Front mount
MSPNP 90-93
Built bottom end and some head work
deleted AFM
straight pipe exhaust
HKS SSQV
Innovative LC-1
I would like to acheive 350 - 400 farther down the road after tranny and rear end swap.
Am I currect when I say the GT28RS stops flowing efficiently at 15 PSI ?
#10
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
can you read a compressor map?
you've got (roughly) 98 cubic inches, at 7k rpm. that equates to roughly 198.5 cubic feet of air per minute.
plugging that into the ideal gas law, with, say 90deg F air hitting your intake manifold, you end up with JUST shy of 30lbs of air per minute...
the pressure ratio of 16psi is just a c-hair over 2, so that puts you right around the red dot in the compressor map, with 16psi at 7k rpms. you're not maxing that turbo out. but more than that and you're starting to run away from where it's efficiency is decent. my vote, go bigger :-)
you've got (roughly) 98 cubic inches, at 7k rpm. that equates to roughly 198.5 cubic feet of air per minute.
plugging that into the ideal gas law, with, say 90deg F air hitting your intake manifold, you end up with JUST shy of 30lbs of air per minute...
the pressure ratio of 16psi is just a c-hair over 2, so that puts you right around the red dot in the compressor map, with 16psi at 7k rpms. you're not maxing that turbo out. but more than that and you're starting to run away from where it's efficiency is decent. my vote, go bigger :-)
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