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ALL American Racing Headers Exhaust Systems are for OFF-ROAD use only
GM OEM exhaust gasket for all LT1, LT4, LT5, L83, and L86 engines.
Using this measurement the engine management computer can then adjust the air/fuel ratio to get the optimized fuel economy, performance, and emissions.
Our C7 line is available wiith various options that allow you to fine tune your system to match your upgrades.
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