No cat to high flow cat do I need a retune

[NickF509]

I've looked all over for a good response to this question and I can not find it.

I currently am running a test pipe and i'm switching to a high flow cat (my own reasons lets not debate using a high flow cat vs catless please). Will a need a retune or can I wait?

I'm running 20lbs of boost. I can't find anything with anyone that went from test pipe to high flow cat that had high boost levels. The only thread I was able to find was "if your running rich it will clog your high flow cat."

I have an AEM EMS.

 

[coop795]

You should not need to do a retune, the ECU should pick up the minute variance and adjust its self.

 

[NickF509]

You should not need to do a retune, the ECU should pick up the minute variance and adjust its self.

Thank You for your answer, that is what I was thinking but just wanted some verification.

 

[coop795]

NP, enjoy the ride