CT4-V CT4-V Blackwing w/ARH catted down pipes No CELs

[racerx8]

ARH prototyped some 5" catted down pipes on my '25 CT4-V Blackwing (stock) and gained 28 whp with no CEL. In over 1500 miles and zero issues, no CELs. BTW they add a little better, deeper exhaust sound.
My track day car is a '23 CT4-V Blackwing with the JB4, Gigs TB, green filters and ARH catted down pipes and with more JB4 tuning reached 465 whp (Mustang dyno). Contact ARH (American Racing Headers) for more info on the CT4-V BW catted down pipes.

 

[Antbob]

Almost $3k for downpipes though. I hope they post some more details/ audio on them soon

 

[piranha971]

Downpipes without a crossover on an LF4 sounds pretty bad. That was understood a few years into the ats-v life cycle.
And the deal about downpipes without an CEL.....If they are not reducing cat efficiency (since there is no CEL) to flow better, what makes them less restrictive than OEM?

 

[G.Newt]

Downpipes without a crossover on an LF4 sounds pretty bad. That was understood a few years into the ats-v life cycle.
And the deal about downpipes without an CEL.....If they are not reducing cat efficiency (since there is no CEL) to flow better, what makes them less restrictive than OEM?

The RP black series downpipes sound good on the 4BW with no crossover.