[Christ]

I usually increase the size of the ground wires on the car, just for posterity.

The theory is that when your ground system is creating restriction in your electrical system, you have to pull/make more amperage from the alternator to compensate for the restriction (since voltage is the constant in the system, amperage is increased to compensate), which results in more drag on the engine.

It probably fits in the "splitting hairs" category, but I do it also to help clean up the wires under the hood, so it's not a big deal for me. The wire is only about $1.00 a foot or so, from most Audiophile shops. Just replace all the double-ended grounds with something like 4g or 2g wire.

You don't have to buy the $4.00 cable lugs to bolt them on, either. You can just get 2 feet of soft copper tubing and make ends. Make sure the tubing is the tightest fit on the wire as you can get AFTER you cut the casing off the wire.