The o2 sensor isnt gonna make you run hot unless you are running really lean. Then you would see the manifold glowing but if you had that I am sure you would have said so. The only thing I see that comes to mind is there isnt enough of a signal getting to the computer to give it the proper signal so it is freaking out. I know there is a bunch of people that use different o2 sensors because of they are better for widebands but to that effect I am not sure.
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1987 supra NA 5 speed
1JZGTE swap
Tokico Illumina 2 and Eibach springs
Tokico pillow blocks
Suspension Techniques front and rear sway bar
HKS super dragger cat-back exhaust plus test pipe
Greddy Profec B spec 2 boost controller
HKS type 1 turbo timer
Supra sport solid steel drive shaft
Walboro 255 fuel pump
JZA70 Front end mod
18" Volk Racing AV3 18x8.5 front 18x9.5 rear
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