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Crackle tune on stock cat

1052 Views 6 Replies 5 Participants Last post by  BWill9886
So I’m thinking of getting a ktuner soon and I want to load a crackle tune in but I’m pretty sure it’ll blow out the inner filling of the cat, if it does would the motor be fine or would it throw a check engine light?
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It will throw a cel, but you can turn off the 2nd o2 to ignore it.
You motor will have issues eventually since your AFR's will be off for this to work.
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