Have you done anything to add more fuel? The computer will adjust and
compensate for changes at part throttle operation but reverts to look up tables
at WOT. Unless you do something like bigger injectors or increased fuel
pressure the engine will not be at an optimum air fuel ratio at WOT to see the
max benifits of the headers.
Dave Clement
99 SLT+ CC 4x4
In article <0F45A7A5E62CD211B8CC0008C7A402F0213E53BB@ftwntexmp002.bnsf.com>,
Donald.Mallett@BNSF.com ("Mallett, Donald B") writes:
>
>
> Finally got the headers installed on my Dak! Only took a week or so of
> trying to get them to seal up. I finally decided to work on one side at
> time till they where sealed tight. Learning curve? More like a freaking
> mountain!
>
> Bottom line, many people say the headers don't do a dam thing for
> performance on the 4.7L! Yea I would have to say they are about 90% correct!
> Throttle response is a little better, Runs smoother at the higher rpm. To
> early to tell if any mpg improvement yet. The one thing that Cindy likes the
> best is that the cab interior droning sound of the exhaust has been greatly
> reduced. The exhaust system as a whole has a nicer tone to it.
>
>
> *-------------------Y2KOTA----------------*
> Don Mallett
> Y2K QC 4.7L Auto SLT+ 4x2
> http://www.y2kota.us
> *--If all else fails, Throw in the "PIT"--*
>
>
>
This archive was generated by hypermail 2b29 : Tue Jun 01 2004 - 10:59:13 EDT