o2 reading 4.47

[punx4life85]

alright my 91 awd talon is eating alot of gas.......... i mean like a 1/4 tank in less than 30 miles. i recently purchaced a apexi turbo timer with the a/f guage. when i installed it i thought i hooked it up wrong cause it wouldnt read at all. i spent 2 hours on the phone with apexi to figure out nothing. the timer itself works fine. but the o2 reading is always between 4.47 volts and 4.59 volts. i read my mechanic book a whole lot. it says that the o2 sensor should be between 0.1 - 0.9. so i changed it with a boshe sensor. same problem. i started my car and tested my connection with the wire un-plugged and it read 0.8, and when i connect it back to the ecm it shoots back up. can anyone please help me....... please god tell me i dont need a new ecm!!!

 

[punx4life85]

i guess thats not a good sign... any ideas will help