Exhaust manifold leak in one runner

[tips000]

Could a leak in one runner in the exhaust manifold (I have a tubular manifold) cause a misfire or choking under high load? I'm at 10 psi on a 16g and it only misfires under full boost at higher rpm... Any thoughts? No boost leaks.

 

[nfernotalon]

Most likely not. Your turbo will just work harder to get to 10psi are your plugs gapped correctly?

 

[tips000]

They should be... I will check them again... I just put them in 2 months ago.

 

[nfernotalon]

Make sure you get the leak fixed anyway and gap them to 0.28 or try a smaller gap or colder plug.

 

[Action600]

Do you have supporting fuel mods? Sounds like it may be running out of fuel possibly.