So I run a lot of extra stuff in my car, 2 12's @ 800-1200 watts and neons underneath the car and in the truck which is another 100 watts.

I did some research and did a big 3 upgrade with 4awg wire since it was only $3/ft at the local shop and they didn't have loose 2 or 0 awg.

I ran an extra wire from the battery negative to chassis and an extra engine ground to the battery negative.
I haven't gotten around to it yet but I was going to run an extra positive wire from the alternator to the battery.

So now when I drive off the engine kinda lags, I did a throttle reset and it still happens with the wires hooked up.

I have dianosed that the extra engine ground wire is causing the throttle to mess up. Is there a certain spot I should have this wire hooked up to? Right now I just have it hooked up to a bolt on the valve cover.

Thanks for any help you can provide.