Tune needed for cat deletes?

[boost21]

Hey all I have had my current exhaust on for a little while and it consists of basanni from the headers back. The mid pipe has race cats but when purchased I got the delete pipes with it. Curiosity has got me wanting to see what the car sounds like with the cats deleted. Other than an obvious rear 02 code, would swapping in the deletes throw off my tune or risk hurting the engine? Car is an 04 cobra with a whipple if that matters.
Thanks!

 

[03cobra#694]

Nope, just the cel.

 

[1wild-horse]

If you have a handheld, you can most likely turn the rear 02's off. Tuners almost do this automatically, unless you are in a state that requires testing.

 

[boost21]

Ended up deleting them and spacing the rear 02's with non foulers. No cel's


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