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Re: 93-8 GM vortec CPI- 4 .3, 5.7
Posted to Technical Tips Forum on 5/7/2000

Al,

Good post with a couple additions:

The CPI unit was not used after 1996. The 96 and above uses a 6 or 8 single injectors and is called a CSFI . The early units have a terrible problem with the pressure regulator leaking internally flooding one bank.

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