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Sure it will help, it has to, but it probably won't help enough to make much difference.
As others said, it may make a difference after sitting stopped for a while when there's little flow through the pipe and under the hood, but once you're moving and flow rates are higher I doubt it will do much.
As others said, it may make a difference after sitting stopped for a while when there's little flow through the pipe and under the hood, but once you're moving and flow rates are higher I doubt it will do much.