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...new plugs & wires = putting things BACK to where they're SUPPOSED to be, which just gets you BACK to 100%-optimal efficiency...anything goes wrong and you're DOWN to less than optimal.
...count the LRR tires as ABOVE 100% because they weren't OEM on the car, they're a BONUS over that 100%-optimal benchmark.
...count the grill block as ABOVE too, if it works well enough (some changes are only subtle).
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• 2011 Chevrolet Cruze LTZ 1.4LT 6A
• 2009 Pontiac Vibe 1.8L/SIDI 4A
• 2004 Pontiac Vibe 1.8L/MFI 4A
• 2003 Ford Focus ZX5 2.0L/Zetec 4A
• 1971 Dodge Charger 318 3A
• 1970½ Plymouth AAR 'Cuda 340/6BBL 4M
• 1968 Dodge Charger 383 3A
• 1967 Plymouth Barracuda Formula S 383 4M
• 1965 Plymouth Barracuda Formula S 273 4M
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