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Discussion Starter #1
Would like to know if anyone is running this setup and whether or not this actually works. I know another tune is required for the full use of the DP but until I get around to it will the car run rough?
Will be installing a 02 spacer as well

Thanks in advance guys.
 

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What?

the ford perf procal is meant for the catted stock pipe.

Changing it will affect the tunes parameters, probably for the worst.


stock downpipe is best for FP tune. As it’s tuned for it. Do not install o2 spacer
 

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Discussion Starter #3
I meant if I were to upgrade the DP to lets say Mishimoto Catted downpipe, how would the car run without a dedicated tune?
 

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Do it right and get a custom tune.
 
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