Intake or Exhaust

[Toyotanut]

Which one to do first? I know ideally you'd like to do them both at the same time.

Oh, this is for an 01 Expedition 5.4l

 

[Totalled]

Exhaust. Constipation is worse than asthma.

 

[junkyard jim]

Exhaust is the cork(sucker) in those things.

 

[JOOP]

Exhaust and slap a K&N filter in it. You'll be happy.