Mike Catlin wrote:
>
>
> Bob,
> Those are actually pretty good numbers. Here are the results
> of some other dyno & G-tch readings from various sources:
>
> Some 5.2 readings
>
> "Truckin Magazine"
> dynode a stock Dakota 5.2 on a Dynojet
> Dyno in Oct 97 issue pg 167. Rear wheel reading 160 HP
>
> We G-Teched our 5.2 and got a rear wheel reading of 162 HP
>
> Some R/T readings
>
> Hot Rod magazine dynode the R/T on a Dynojet
> in May 98 they got a rear wheel reading of 191.7 HP
>
> I G-Teched my stock R/T before any mods and got 195 HP
>
> I got the 220 HP reading on my R/T on the dynojet after my throttle
> body mods and a open air filter with a K&N filter. Also had 14,000
> miles on it so the engine was nice and loose. I'm going to try to
<snippage>
Mike,
I wish I had the run sheets with me here at work. I'll post some better
data tomorrow.
Did your runs span the 3000-4000 rpm range? I thought I saw a post of
your numbers and a graph, but I can't seem to find it now. We did pulls
where I operated the throttle going from 20 mph to 70 mph on the speedo
and the printouts ended up in the 3-4000 range. I will say that the open
element seemed to have quicker windup and since it was the last pull, it
had to be one of the warmest runs engine temp wise.
FWIW, I ran my JBAs through a couple of drive cycles before installing
the JET chip. I definitely get more "butt dyno" feel from the JET
between 3000-4800 rpm, but with only two cycles the OBC could have been
still adjusting.
I will be running with and w/o the JET during the next DynoJet session.
This will be a pre-cat back deal. Then possibly a third session with a
cat back and whatever else I can come up with that holds promise.
Bob
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