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if i'm not mistaken, often times rally cars don't run wastegates, they just let the boost spike as high as it will go, and it trails off at higher rpms due to the restricter.
as far as turbo'd n/a engines, it's alllll in the tuning (well, mostly). you could run 5psi and blow your ring lands to pieces, or you could 10psi and have a safe, reliable engine. tuning, fuel, and maintenance.
-Mike
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1991 MR2 Turbo - 2.1L high compression stroker 3SGTE
2006 Tacoma 4x4 TRD Off Road - All-Pro front bumper, Old Man Emu shocks, Old Man Emu HD front coils, All-Pro leafs
1990 240SX Coupe - sold
2008 Civic Si Sedan
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