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header welds/spark plug resistor

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I have a 99 400. Cut airbox,freeflow exhuast, rejetted,it runs exc though cold blooded. If I grind the header welds and eliminate the spark resistor, will I need to alter the jetting again? Thanx!!

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Grinding the header welds won't require you to rejet. Gutting the muffler might though.

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I had to do a doubletake too. Thought it read "arrestor" for a second.

But I agree. Shouldn't need to rejet after grinding the welds or for the spark plug resistor mod.

Gutting the muffler might though.

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I had to do a doubletake too. Thought it read "arrestor" for a second.

Oooopsy! I certainly misread it. :banana:

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Grinding the header welds affected my idle jetting, only a couple turns on the screw, but it did make a difference.

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