CAT DELETE Need a tune?

[WildHorse]

Those intervals for E85 is that a full E85 not like an E25-E30? Thanks

Dunno. But here's some guidelines:
https://www.walkerproducts.com/o2-sensor-training-guide/troubleshooting-oxygen-sensors/

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[Dave2013M3]

Dunno. But here's some guidelines:
https://www.walkerproducts.com/o2-sensor-training-guide/troubleshooting-oxygen-sensors/

Thanks, I started running E20 in the M2. So far she seems to like it. I just don't want to start eating 02 sensors. I went through one with the Mustang in under 30k miles.

 

[stannypack]

You will have no issues other than a cat inefficiency CEL. You can try spacers on the rear 02s like Big Daddy's CEL illiminator kits.

Big Daddy Garage

which of the 3 spacers do you recommend? I'm assuming the mini cat one?

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