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Acceleration problems

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Old 02-27-2014, 09:09 PM   #1
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Default Acceleration problems

I have a 2006 fx4 5.4 Ltr. It has a Gibson exhaust that comes out in front of rear tire and a k&n intake. When I put the gas to the floor it Boggs down bad from 3000 Rpms to 3500. In order to reach high Rpms I have to eas into it. Also sputters on highway when I cruise at low rpm. Any ideas?
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Old 02-27-2014, 09:15 PM   #2
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have u done the baisc tune ups. change plugs and stuff? it helped my brother with his 05 fx4 alot with that. he had the Exact same problem j described
06 Screw 4x4 5.4L
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