trophystock

I put a set of longtube haders on my 99 c5. You are supposed to use the rear o2 as you front o2 after the swap (rear o2s have the long wire to reach). When I pulled the o2 out of the stock mid pipe, the threads on one of the 02s was damaged. So I replaced it with a bosch sensor. Now I have a huge variance from bank to bank on my o2 readings and LTFT. I recently took my slp MAS and removed the resister and used a z06 MAF table and my LTFTs are bank 1 +22 bank 2 +11. Wot I see bank 1 o2s at 750 and bank 2 at 880. Bank 1 o2 seem a little slow also. Should I take it bake and try another bosch (free), buy another bosch to replace bank 2 sensor, find another stock one to go in bank 1 inplace of the bosch?

trophystock

I am going to swap sensors in the morning (side to side0 and see if the problem is the sensor or other issues (vacume leak/ header leak).

jimmyblue

iTrader: (11)

A side-side mismatch in WOT output voltage is
normal. Simple thermal differences can account
for most of it. But a swap won't hurt nuthin'.

trophystock

I found I had a bad 02 sensor. I guess a 75,000 mile stocker isn't quite as good as a brand new Bosch. Picked up another bosch and now my LTFT look great and 02 readings at WOT are within .025 volts.