Re: [DML] New Exhaust headers

[Farrar Hudkins <fhudkins@xxxxxxxxx>]

Hm, this makes me wonder if Houston or Hervey have "tuned" their 
headers. Exhaust pressure is easy to check, so I don't see why not.

You can check your exhaust pressure yourself if you want. Take out your 
oxygen sensor and stick a pressure-tapping tool in the bung. I think 
(and my memory may be faulty) that the general rule of thumb is that it 
should be no greater than 2psi at 2500rpm.

Farrar Hudkins
#2613



Paul Gress wrote:

>  >
>  >
> This has to do with "exhaust scavenging". 

> 
> This is what "tuned headers" are suppose to do. This is why tube
> diameter is critical at an RPM. The tube diameter is usually tuned to
> operate at the maximum horsepower or torque rpm. .
> 
> Paul



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