Previous tests have shown unequal-length short-tube headers are worth around 7 hp on a near-stock 5.0 engine, while equal-length short-tubes typically pick up around 11 hp. Frankly, we were amazed at ...
When utilizing long-tube headers, the oxygen sensor is moved farther away from the exhaust port of the cylinder head. This can cause driveability problems in some applications. If your sensors are ...
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