Ok...
Every engine and the components that bolt
To said engine are unique.
A CAI isn’t cold. It’s a larger airfilter that sacrifices filtration for flow. It’s hot air.
The spd turbo adapters would work well if the bottle neck in the engine was past the turbos. It’s not. I have them installed. They didn’t do anything.
The catback surprisingly does offer some horsepower on these. Ford has to really muzzle the ecoboost because it sounds well.... like an ecoboost.
The downpipes give a whopping 7 ponies.
I would like to know where you got the info on downpipes only Givin 7hp without cats. It has been the biggest hp gain for me after the tune on the gtr,, so this kinda is a surprising comment for me. Of course you would need a tune to support the down pipe,but if that's really the truth I would prob leave the stock down pipes alone