I recently noticed I had low power below 4000rpm, above that it seemed to be normal, but its hard to tell. So i checked my coils with a timing light, and both trailing coils seemed to have a miss. No codes have ever showed up but there is a definite miss as I rev through 4000. So I replaced both trailing coils, but the issue still persists. I replaced all plugs and wires about 2 months ago so the rest of the ignition system is good. Any ideas of where i should go from here?

 

Try resetting your ESS with the 20 brake tap dance yet?

 

I did, and still no change.