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Maryland Speed is where I got mine; coated and a great price with the pipes.
A tune is in order after installing these.
It will not self destruct before the tune, but I wouldn't get into power enrichment (wide open throttle) which actually comes on much sooner than the literal wide open throttle.
Very likely your fueling will be off in that mode.
The coating may not be needed for rust, but it will keep them looking shiny and keep engine bay temps down.
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