At 10:35 AM 4/7/00 -0500, you wrote:
>ps - I've talked to a parts manager down in FL who has some experience
with the
>4bbl TB. He said his customer put one on and complained about driveability.
>Mostly that while easing the throttle plates open - it would compensate fine.
>But, when stabbing the throttle - the truck would stumble due to all the
extra
>air. I'm pretty sure that thing flows at least 1000cfm. Sounds like the
factory
>delta-TPS enrichment tables need to have their pulsewidth values increased a
>little to compensate for the extra air. Unfortunately, custom computers
are not
>only very expensive but also very illegal.
I read that the only neg. affect with a 4bbl which may be too big for an app.
is in the 'tab in'. I didn't quite know what this was referring to. It would
seem that it's referring to a sudden transition to WOT.
I am testing 24#s with a custom computer (unfortunately not for my particular
setup) and a sudden WOT from any rpm results in bogging. Scanner was reading
rich when this occurred so I assumed that the AFR from the table was too rich.
Normal/even aggressive acceleration operates without bogging and with very
noticeable power gain though.
Testing continues.
Bob. Southern Ontario, Canada.
'97 Dakota CC Sport, FR, 5.2L, 3.55 SG, auto.
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