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01-02-2013, 09:29 PM
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#2 |
 ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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There are about 100 threads on here about those type of devices and no they do not. They have a $0.03 resistor to modify the signal from MAF. It will temporarily make the car run richer, but the ECM will quickly learn and adjust to it.
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