Can we use AEM fuel pressure regulators even though there's no fuel return? Someone(w/o a new si)told me we couldn't. If so, does it install in the same place as before(on old si's)?
Can we use AEM fuel pressure regulators even though there's no fuel return? Someone(w/o a new si)told me we couldn't. If so, does it install in the same place as before(on old si's)?
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