Safe to run downpipe w/ no tune?

[BMW_YOTA]

As the title says. Since the 21's Supras are not tunable, I'm curious to know if you can run a downpipe with no tune? I understand check engine light will pop up but I'm not concerned as my inspection isn't due for another year and hopefully by then I'm hoping to have gotten a tune.

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[Rocksandblues]

yes

 

[Extreme Power House]

it is safe, you get a warning but the car will run the same

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