Evo 9 O2 sensors

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Jan 28, 2014 | 07:56 AM

#16

Jeff_Jeske

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From: On the track

Is the rear O2 also used to dial in fuel trims?

Jan 28, 2014 | 08:05 AM

#17

Jerry321

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From: Oc

Cheapest place for parts, HANDS DOWN!

http://www.rockauto.com/m/mobilecata...&parttype=5721

Jan 29, 2014 | 02:19 PM

#18

jrainwater

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Quote:

Originally Posted by Jeff_Jeske

Is the rear O2 also used to dial in fuel trims?

Yeah the LTFT is at least. I'm not really sure how important LTFT is because there are thousands of evo's that have the rear o2 deleted and they're getting tuned some how without it lol. I installed my fic 1100's without the rear o2, dialed in all the short term trims perfectly and the car is running great. Curiosity wouldn't allow me to move on and forget about it so I threw a rear o2 back in just to see the long term trims and it was like -1 or something. Totally fine and most would say practically perfect. So I'm kinda up in the air about how important LTFT is to begin with.