turbotime

Ok I start the car and its fine, then I go and as long as I keep it under like 4k rpms its fine. As soon as I try to push it and go over like 4-5k it throws a CEL code 1. I know its the o2 sensor I have tried 2 working sensors already and it still throws the code. I have 2 bungs on my header, one on the manifold and one at the bottom of the header. RIght now the o2 is on the manifold, should i move it to the bung lower on the pipe? I have a p28 ecu.

HELP PLEASE

Spade

Lower 1. I believe your O2 is getting too hot.

turbotime

i lowered it and it still threw a code 1, do i need to put a new o2 in? Do you think these 2 i have got burnt out from all the heat?

turbotime

UPDATE:

Cel doesnt come on when i start the car, run it hard (over 5k) and the CEL comes on, SOMETIMES. I can turn the car off and on the second the CEL comes on and its gone, performance is good. I can do this every time. Also, after the CEL comes on, the car hesitaties and surges, almost like a sparkplug is out, but if i turn off and on, its all better. So how do i make the CEL not come on at all??

turbotime

night bump