I turn my car on for about 5 minutes and then grab a hold of all the header primaries to see if they are hot or not.

 

Mine has a slight pop every now and then in the exhaust.. im pretty positive that its a burnt wire and nothing to me worried about...it doesnt shake all the time in 5th or 6th gear.. it mostly screams through 1,2ndand 3rd but then when it hits 4th through 6th it takes its sweet *** time getting up there and that kinda bothers me.. the poping in the exhaust isnt an exhaust leak its an ignition problem of some sort.. the opti was freshly put in and i had the problem before and after the opti install.. I have mac headers so im almost positive that those crappy msds are the cause!... search for my post...."power loss".. the pop in the exhaust isnt noticeable unless you listen for it.. also if your in 1st gear and push the gas about half and let it go through the rpms but dont hit the gas all the way and if you feel a hesitation (like i do) i would guess plug wires.. how to find the cylinder i have no idea

 

When one of my wires burnt against the header I looked under my hood and you could see the engine moveing side to side alot faster and harder. If you know what under your hood looks like when it's running then try that. Hope that helps

 

You must be Superman