anyone have any additional information on some of the dealer installed accessories:
most important to me:
heavy duty front & rear strut bars
front air brake ducts
front corner air-dams
grounding cable (I know this was a needed mod in the WRX)

the rest is pretty much fluff, but these options, if priced right could be cool additions.

anyone know more then what is presented in the Evo brochure?

 

On Monday I will check with our parts guys to see if they have pricing yet, but somehow I doubt it.

 

Explain to me what an heavy duty earthing (grounding) cable does for you... noone has been able to answer that yet.

 

Basically if all parts of the car are not grounded to the same place, you could get a potential difference between parts. This makes a voltage difference, thus causing a small current.
This extra electrical noise can cause problems, especially in your spark or injectors etc causing engine stumbling/hesitation etc.

A grounding strap provides a good central ground to multiple different places so that no potential difference exists.

Why its needed and not part of the original design is beyond me.

I hope I explained it correctly.

 

it makes the car run a whole lot smoother eletrical-wise.

 

I have seen several dyno tests - the WRX comes the mind here - where the addition of a heavy gauge grounding system helps performance. you don't really gain HP, but you can smooth out the existing HP graph.

 

I agree, this should have probably been integrated into the original design, but oh well .