MY03 WRX STi hoodscoop
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Guys,
I think the scoop has been made like that for a reason!
I have done some research of my own using CFD (computational fluid dynamics) where i modelled a scoob bonnet and scoop. It was found that at speeds over 80 mph a lot of turbulence is created at the lip of the scoop thus not allowing so much air to enter. This causes charge temps to rise. I wonder what happens next?? At speeds over 90-100mph the turbulence is not so bad BUT what hapens is that the flow of air is directed to the back of the intercooler so the front part of the core doesnt get much flow. I havent properly seen the MY03 scoop but hopefully they have modified it to increase flow and distribute it more evenly.
Cheers
Gez
I think the scoop has been made like that for a reason!
I have done some research of my own using CFD (computational fluid dynamics) where i modelled a scoob bonnet and scoop. It was found that at speeds over 80 mph a lot of turbulence is created at the lip of the scoop thus not allowing so much air to enter. This causes charge temps to rise. I wonder what happens next?? At speeds over 90-100mph the turbulence is not so bad BUT what hapens is that the flow of air is directed to the back of the intercooler so the front part of the core doesnt get much flow. I havent properly seen the MY03 scoop but hopefully they have modified it to increase flow and distribute it more evenly.
Cheers
Gez
I'm curious to know if the 03 scoops have the same foot print as the 01/02 scoops...
Umm about the aerodynamics, have you seen the front of the car? The car more bludgens it way through the air rather than slice.
Umm about the aerodynamics, have you seen the front of the car? The car more bludgens it way through the air rather than slice.
Gez
Interesting findings. The STI-7 has a 'splitter' to divert the airflow over the entire intercooler rather than over most of it like the standard WRX and 'Classic' turbos.
I did have one fitted to my old MY00 and found it made a measurable difference in 'feel' in the summer, but had little effect in winter. Their effectiveness was debated at great length a year or so ago but they must do some good otherwise Subaru would'nt have fitted them as standard to the STI-7.
I've not seen a close up of the STI-8 scoop to see if they've fitted a splitter to that as well
Interesting findings. The STI-7 has a 'splitter' to divert the airflow over the entire intercooler rather than over most of it like the standard WRX and 'Classic' turbos.
I did have one fitted to my old MY00 and found it made a measurable difference in 'feel' in the summer, but had little effect in winter. Their effectiveness was debated at great length a year or so ago but they must do some good otherwise Subaru would'nt have fitted them as standard to the STI-7.
I've not seen a close up of the STI-8 scoop to see if they've fitted a splitter to that as well
MY01/02 STi owners generally hate it.
MY00 and earlier ignore it, but think it still has bad front lights
MY03 soon to be owners - they love it, better than all the other models.
see any pattern here?
MY00 and earlier ignore it, but think it still has bad front lights
MY03 soon to be owners - they love it, better than all the other models.
see any pattern here?
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user 46373939
ScoobyNet General
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Sep 17, 2015 03:51 PM











