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When you think about all this:
KA24DET @ 7psi has an effective compression ratio of 14.0:1
SR20DET @ 7psi has an effective compression ratio of ~12.5:1
SR20DET @ 9.7psi has an effective compression ratio of 14.0:1
This shows one example why it takes more boost on a SR to make the same horse as the KA all things equal.
Factory boost pressure has to be similar to the Avenir SR20DET from the factory.
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