you need a o2 extention. zzp sells them. BUT.
if you can solder you make your longer. you cut the plug off the cars harness, leave the wire 4 inches or so long, then solder in 3 feet of wire to each of the wires, then solder the plug back on.
i did mine so long so it could reach to the strut tower, then drop down to the rack area to the o2. this way it cant melt on the header at all.
you will need to hammer the firewall to clear the o2 so it dont hit the fire wall. if you dont clearance it it will hit and cause false KR and it can also break from hitting.
i was unable to make the fire wall move with the header in place. so i moved my o2 to the cross over.
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