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If you have an 87 Rx7 you installed an aftermarked turbo is an o2 sensor really needed and why?
Mrenns34
the short answer is yes
the stock one gives a little bit of information to your ecu and makes your car run a little better
The long answer is
YES if you get a wide band O2 sensor this makes sure you are less likely to blow your motor by having a rich or lean fuel mixture then you can get your boost controller and turn up the boost!... well until you run lean and that will be about 1 psi from the stock 6 psi... then you can get a fuel computer and bring it to around 9 psi... but then you will need something bigger then your stock 550's... so get two 720's and put them in lead (but not trailing...i think) and maybe go to 12 psi... and you can only do all of this safely if you get a wide band O2 sensor!
I am doing that to my rx7 at nv8.ca
-Bailey
PS: the stock O2 sensor is a narrow band to do tuning you need a wide band with a proper gauge.
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∙ 15y ago
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