well today i was taking my car for a beat run since it was nice and as i got on the freeway topping out 3rd at like 7-8000 rpm my tach started to go nuts and was going all over the place (Bouncing around and floating)... im assuming that my coil is taking a **** but i could be wrong... tell me what you guys think is going on here!

btw i just replaced the plugs, wires, and cap & rotor o and also the icm was replaced since it took a **** 5 minutes after i got off the dyno

 

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