Are cat backs all sound or do they make HP?

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07-21-2016, 01:54 PM

#11

Dino Dino Bambino

4th Gear Member

Join Date: Oct 2014

Location: Cyprus (EU)

Posts: 1,571

Quote:

Originally Posted by proeagles

Just the messenger here.

Well you know what happens to the messenger.

07-28-2016, 10:00 PM

#12

ATRAIS

Join Date: Jul 2016

Location: Illinois

Posts: 9

Yeah catbacks won't really do much of anything. The biggest exhaust gains are from cat deletes / off road X or H pipes, and headers. I'm kind of surprised at how much can be gained by headers on a Coyote, though, because the stock manifolds look like really well thought out units, not quite like the awful manifolds of yore.

07-31-2016, 05:09 AM

#13

Dino Dino Bambino

4th Gear Member

Join Date: Oct 2014

Location: Cyprus (EU)

Posts: 1,571

Quote:

Originally Posted by ATRAIS

I'm kind of surprised at how much can be gained by headers on a Coyote, though, because the stock manifolds look like really well thought out units, not quite like the awful manifolds of yore.

The tune helps a great deal.

08-19-2016, 12:09 PM

#14

jwslaw

Join Date: Feb 2016

Location: Texas

Posts: 27

just installed Roush axle backs and it sure seems faster, but I know its really not. sound, whether from an intake or an exhaust seems to give the impression of more power in my opinion without really doing so. so its worth it to me even if I am just thinking I have more juice under the hood.