I've never found I had to change stock spark plug wires in any cars that I have owned. I also read an article awhile back on a spark plug wire comparison and the result was that no wires provided better engine performance, but no wires provided worse performance.

Have any of you noticed a difference with aftermarket plug wires in maybe fuel economy? I am thinking of getting MSD with 8.5 mm silicone. There's a couple different insulation diameters out there by Accel, MSD, Nology, Neuspeed and NGK. Anyone have any recommendations? I am not interested in dressing-up the engine bay with colored wires. Thanks.

 

the word on the street is oem,ngk or nothing else. personally ive never noticed any difference going to the 8.8 wires from accel. oem and bosche have done me well.

 

i have ngks and they work just fine even with boost, but i would find the cheapest ones to oem or just get some oem ones if you arnt planning on dressing up the engine bay

 

Spark plug wires or an MSD box won't gain you anything. As a matter of fact, on a few race cars I worked with, an MSD box actually cost the car HP.