HKS wastegate spring issue?

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03-26-07, 06:44 AM

RX7Junkman

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HKS wastegate spring issue?

question I have a 20pound spring I believe I was boosting 20 when I bought it but bought a 14.2pound spring my question is the harder the spring the less boost or the less spring less boost. cuz the spring I had removed is lighter than the new spring which stiffer.

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03-26-07, 09:28 AM

Busted7

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The spring holds valve closed, the heaver the spring the more pressure is required to open it.

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03-26-07, 09:36 AM

RX7Junkman

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meaning less boost or more boost

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03-26-07, 09:44 AM

Cgotto6

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More I would assume. The wastegate bypasses exhaust gasses around the turbo, thus keeping the turbo from boosting more. So if there is a softer spring, it would mean less exhaust pressure would get it to pop, and retroute the exhaust.