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vin x or w, what's the difference?

68ramair68ramair Member Posts: 3
edited April 2014 in Chevrolet
I have had 3 astro/safari vans over the past 10 years or so. Had x and w codes. I know it has something to do with the fuel systems. Are there any other differences? Which is better? I am currently looking to replace my safari.

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    dlm1954dlm1954 Member Posts: 57
    Vin W is CMPI AND Vin X is throttle body or just multi port ,one or the other.
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    68ramair68ramair Member Posts: 3
    Yes, I kind of knew that. I want to know which is better. Are there advantages of one over the other. Why are there 2 different systems?
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