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#1
07-05-2005, 07:37 PM
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I/H/E on Blazer...MPG
Im thinking about buying a 2000 Blazer 4x4.I know GM doesnt build there engines very effeciant when it comes to Exhaust design and intake etc.
What MPG gain does everybody get with aftermarket Intake/Header/Exhaust.Being less restrictive you should free up alot of HP as get better Gas milage correct? Also whats the CR on the 2000 4.3? Thanks 
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#2
07-05-2005, 10:40 PM
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Re: I/H/E on Blazer...MPG
Maximum, 2-3mpg.
Do the muffler and the intake, forget the headers. Stock headers flow very well for this engine.
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1995 Factory Blazer Service Manual for sale, PM if interested.
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