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I have a mint 300 Z (non turbo) and I recently re-did exhaust with an X pipe and Magnaflow system. Dual exhaust with 4 tips. She sounds GREAT and is running great, but she is running Rich. Exaust pipes get filthy quick. Should I be concerned with the 02 censors not reading the right fuel mix? I don't want to choke her out. Again she is mint. 45K miles. Anyone run into this? NO CHECK ENGINE LIGHT YET....
 

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Power FC Z32
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kabeyta said:
I have a mint 300 Z (non turbo) and I recently re-did exhaust with an X pipe and Magnaflow system. Dual exhaust with 4 tips. She sounds GREAT and is running great, but she is running Rich. Exaust pipes get filthy quick. Should I be concerned with the 02 censors not reading the right fuel mix? I don't want to choke her out. Again she is mint. 45K miles. Anyone run into this? NO CHECK ENGINE LIGHT YET....
You want to do a ECu Check to see if it's you O2's that arewacked out?

Follow the steps

ECU
 
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