What are good o2's to run.
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From: Indiana boy
What are good o2's to run. I have put new headers on & thought about putting in new o2's since I have been running leaded gas through the old ones. Is the boasch o2's any good, that is all the parts stores sell around here. I don't think I'll be running leaded gas through them any more. But maybe when new heads go on. How about those denso's are they good? 
I have bosch and those too are going bad on me again. I would suggest looking into the denso corvette rear o2's for use in the f-body front locations. Densos also seem to be far more lead tolerant, but theyll eventually die from running too much leaded gas too.
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From: Indiana boy
Is this the right #'s 234-4025 L 234-4087 R Are these correct denso's. Are the wires longer than stock wires like the bousch 13444's? I checked on oem O2's they were 150.00 retail, thats to much.
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From: Pa
I actually switched to the bosch corvette rears 02's to put in my fronts cause my slp extensions were failing everything up and the vette ones didnt work for me either. I am probly going to do a closed loop on them.
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From: Indiana boy
I don't know that mine are bad. When I went to the dyno last time & got it tuned, the A/F gauge on the dyno was not working properly so we could'nt get a correct reading. But the plugs are pretty white when I took them out yesterday. I also have ran racing gas through it mixxed 50/50 with 93oct. I also just installed FLP Lt's & figured why not. Need GOOD advice.
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From: The South
Originally Posted by ddelallata
Go buy new ones at the dealer and stay away from Bosch 02s.
My original O2's got fouled to all heck and after some minor searching I realized I should be running O2's made for the rear C5 bank. Ended up with Bosch part #13111. I put them in and my horrid problems went away immediately. Am I going to end up replacing them with something else? I havn't happened across this claim before.
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Originally Posted by blkZ28spt
Wires should be plenty long for any header. I had to bundle extra wire up with zip ties on both sides. (jet-hots)