1n4002 diode? Was it supposed to cone with the boost control kit?
 

I see brain says you need this "1n4002" diode connecting the 12v and ground of the GM boost controller. Why and where can I get one?

You can pick them up at RadioShack.. Thats where I've grabbed several.

it's not "needed". It's to prevent voltage spikes. It should have come with the kit, but it's not a big deal if you don;'t use one. You should of had 3 leftover from your MS build if you didn't build the VR circuit like I leave out.

Ah, I do have 3 left over! ill just use one of those, thanks guys.