Should I retune my engine having changed an H mid pipe for an X?

[panic]

Hi, I have a CAI with a tune and a cat back free flow exhaust, I've changed y'day just the H piece of the mid pipe for an X, looking for a better flow at high revs.

Should I now change the tune to comply with the new mid pipe or the tune will be good anyway?

Thanks.

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[v8440]

I don't know for sure, but I think you will not have to retune.

 

[15GTBEN]

Hi, I have a CAI with a tune and a cat back free flow exhaust, I've changed y'day just the H piece of the mid pipe for an X, looking for a better flow at high revs.

Should I now change the tune to comply with the new mid pipe or the tune will be good anyway?

Thanks.

Not needed unless you remove the cats.

 

[HISSMAN]

Nope. You are good.

 

[LethalPerformance]

No retune needed for that.

Let us know if you have any other questions.

 

[beefcake]

your good to go

 

[panic]

Thanks for all your inputs and comments.

The X mid pipe has added a different tone to the exhaust (which I like more) and flow over 5000 rpms is smoother and quicker.

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