almost done with the maro for some reason it bacame a project haha, question msd cap and rotor price $154 at ebay you guys think is legit part #8481

 

yes it is but thats almost half the cost of a new opti. on top of that changing the cap and rotor usually doesnt help.

 

I wouldn't say it usually doesn't help. When I did mine, and after looking at the crap in the cap, I'm fairly confident a cap and rotor change would have cleared up my bad running engine. The opti works by the same principle as an old school cap & rotor ignition. Going to 100k miles without a cap & rotor "tune up" would be unthinkable.
But, considering I had almost 100k miles on the opti unit itself, and the big pita it is to get to it, it made the most sense to just replace the whole thing and start out new.

 

alrigh koo, i was looking for info into this particular opti i was wondering if this one is brass like the other ones or alluminum molding like dynaspark and a few others, i couldnt find it on the internet,