ran my power wire for amp and engine fed?

[hydrastas]

alright i rewired the whole positive section of the cars power wires to get a 4 ga power wire hooked up. afterwards i hook up the positive to the battery again and got in to move the car. when i turn the keys over the turbo gauge goes to the middle like normal and then when i turn the car over to start it the gauge immediately goes to the bottom and the car starts goes to 1k rpm and then flatlines, doesn't try to stay idle in any way just shuts off. if i hold my foot on the gas the engine sputters but stays on but no matter how long i hold it when i let go it dies. i checked all the fuses and nothings blown. no ideas here.

 

[hydrastas]

wow i feel stupid, when i redid the electrical i loosened the MAF sensor . it looked connected but was a mm or so off. back to norm now though