shake n bake

I have a 2019 5.0 f150 wanting to know if I need to tune the truck if I install a cut out before the resonator

4.6Intruder

No tune would be required for that. Anything after the cats won't requirea tune.

Scott91370

Bigger question is, will you gain anything doing this? Could be $100 wasted.

I was going to do the cutouts on each of the down pipes for a no restriction approach but since they wouldn't be used all the time I wasn't sure how to tune for this - I'm guessing 5 Star could suggest something since that's whose tune I run.

shake n bake

I heard so far you loose low end torque but gain hp on the high end

Scott91370

That is true, I had one on another vehicle (top end gained about 10t/15hp) but the tuning on it wasn't like these trucks. I would imagine after the ECU learned it would pull back any gains made.

Ecks

You would basically be doing it for sound not performance. No tune necessary.