When i try to give it alot of gas....it starts to sputter. Especially going down the highway and the press the pedal to kick it into passing gear and it sputters. I notice on the turbo gage it starts to sputter at the 3 mark approx.... What can I check?

I am looking at the MS wiring diagram and it shows a 2/4 gauge wire attaching to the relay, but what female end do I need to for this to work? That seems like a massive wire to connect to a relay   Note that I am not using the stock relays, my car has absolutely 0 stock wiring. Everything is 100% new     http://i.imgur.com/EE0sxFB.png

Anybody notice the random links showing up all over the forum lately? Words like 'power steering pump' and 'fog lights' have links to like ebay and bizrate. Those kinds of things drive me nuts cause half the time I can't tell if they are the poster's links or just complete junk.

While doing a TPS reset and dropping a socket down below the intake manifold I found this connector just hanging out. It looks similar to the ground cable on the intake manifold, but that is plugged in on mine.   The connector's wire comes out of the loom right next to the wire that goes to the starter, they are the only two wires that come out of that thick part of the loom under the intake manifold   My car is an '87 manual trans car: