Lots of things could explain gains of 19hp. Ambient air temp and humidity
for example. Transmission temperature is another. I'm not trying to call
you out on the carpet for claiming gains w/whatever you've done. Instead,
I'm just stating that the makers of this device, if only hooking into the O2
circuit, are basing claims of increased horsepower/torque on invalid data.
Several years ago I had a bright idea to design a circuit that would fool
the PCM into thinking the O2 sensor were oscillating around 14.7:1 A/F when
in fact it would be oscillating around 12.5:1 A/F. After much research, I
realized that this goal is unobtainable when utilizing a narrow-band O2
sensor due to the narrow band of frequency response they provide.
Latr,
Shane
"Bernd D. Ratsch" wrote:
> Then with this wisdom, please explain how I gained 19RWHP without
> changing anything but adding this box and replacing the factory (120-day
> old) O2 sensor with theirs (4-Wire)?
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@buffnet.net
> [mailto:owner-dakota-truck@buffnet.net] On Behalf Of Shane Moseley
> Sent: Tuesday, January 29, 2002 5:30 AM
> To: dakota-truck@buffnet.net
> Subject: DML: Re: Hyper Speed Controller
>
> "Bernd D. Ratsch" wrote:
>
> > The charts were WOT runs for HP and TQ figures....but as I said, the
> > A/F was around 15.xx across the normal light throttle rpm band.
>
> The chart was indeed WOT runs then. So your stating one thing but
> providing data to support another condition entirely? I'm confused.
> Considering that the PCM is only in closed loop under cruise type
> conditions, and that the O2 sensor is ignored under open loop - then
> this device is doing nothing under open loop if all it does is modify
> the O2 sensor signal seen by the PCM.
>
> > The factory O2 sensor is also replaced with the one included in the
> > kit.
>
> How many wires are going to it? If less than 5 - it is a narrow band
> sensor. Also a wide-band sensor w/associated electronics to drive
> charge pump and provide a voltage out is normally selling for
> $1000-$4000. Sounds alot like its a narrow-band sensor.
>
> > Snake-Oil?? Hehehe...explain the CARB EO# (minimum $10K for this),
> > the HP gains, and the performance gains?
>
> CARB EO# does not prove that the device actually helps the situation, it
> only proves that it shouldn't hurt the situation according to their
> testing. I could get a CARB EO# for the "Helix PowerSpacer" if I wanted
> to waste money.
>
> Latr,
>
> Shane
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