I see that the current Truckin mag has an article that says
that JET Performance has a Stage 1 (for improved WOT and
loading) module for the 4.7Ls. I didn't buy the mag but
I think the gain is 13 hp at 3900 rpm (?). What surprised
me was the steep dropoff of the hp curve after 5000 rpm
with the stock computer. With the JET addon, the dropoff
looked just steep but began at 5500 rpm. If the curves
are accurate, it sure runs out of breath fast.
They also have drop-in replacement hiflow air filter for the 4.7L.
Bob. Ont, Canada.
'97 Dakota CC, 5.2L, 4x2, 3.92 SG, auto., 4265 lb.
PB: 14.737 @ 91.75 9.364 @ 72.95
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