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Re: Truth on Cold Air Intakes
Quote:
Originally Posted by indymachinist
No.
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let me clarify, in terms of fuel economy.
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1999 GMC Suburban K2500 SLT, 454/4L80E
1991 Z/28, 6.0L/T56
1949 GMC 250, S10 Frame, 6.0L/4L80E
Instagram @aceshighspeedshop
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