Im sorry but ive never even hear of the tach senser.........
But yea the power feels fine,when i push the gas tires smoke,lol ok well no but the power is still there.
coil pack,hmm dont know whatr that is.
Injectors,yes i thought about it begin them for the same reason as fuel filter....
Also i have alot of noises from my front tires suspention or something. sounds liek somethings always hitting and rubbing but i look and there enough clearance. But im just guessing my struts are going...Thats not really important right now. I just thought i woudl mention that,