ddunbar wrote:

Hello Paul,
Today I spoke to a friend of mine who own's West Coast Racing and he
advised they put the throttle body on the suction side in all cases.
As I have thought about this more it would appear that it will also
control the boost better and assisting the turbo exhaust dump on the
standard Mazda unit. What do you think.

--
Best regards,
 ddunbar                          mailto:ddunbar@echidna.id.au

I am not sure what he means by control the boost better. Why? 
Why would it better assist the waste gate?

Does he have any aircraft experience with turbo charged airplanes? Once 
you are at altitude the throttle should be near wide open all the time
with the small stock 89-91 turbo. 

Also as Hugh MacInnes mentioned you get suction in the compressor 
if you close the throttle and descend with the prop driving the engine.
Suction could draw engine oil past the turbo charger seals and 
into the engine intake.

Paul Lamar
 
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