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MPG change on 99+ intake manifold swap?

igotanxj

NAXJA Forum User
Location
Citrus heights
Im reading up on swapping my 96 manifold for a 99+ piece and just wondering if anybody had any changes in fuel economy afterward. Knowing that its a speed density system, does the computer have any trouble adjusting to the extra air flow? Any other issues as far as driveability goes?
 
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