Was wondering if anyone knew the time frame estimate on doing the exhaust manifolds and up pipes on a 08 6.4L. Up pipe is broken on pass side so am gonna get both and new manifold just curous on how long id be without wheels?

I have a 2001 7.3 with afe intake, edge juice w/ attitude, 4" magnaflow straight exhaust. I has had a little leakage on the up pipes for a while, but recently the boost only gets to 15-16lbs where before it was 25-27 wot. Also check engine light comes on after 15 lbs of boost then truck seems...