"Bernd D. Ratsch" wrote:
> Right from their Website:
>
> ** What are they?
>
> "STAGE 1:
> If you have a stock engine with no other modification, this is the chip for
> you. The JET Stage 1 performance Chip is programmed for maximum power
> increases on a stock vehicle for improved performance under hard throttle
> conditions such as towing and wide open throttle acceleration.
> *Special Note: Stage 1 Chips are street legal in all 50 states. *CARB
> EO#D-234-4
>
> STAGE 2:
> Designed for modified vehicles with low restriction exhaust and low
> temperature thermostat. The JET Stage 2 Performance Chip has been calibrated
> for peak horsepower in cases where the engine has been modified to run
> cooler and the exhaust system is less restrictive than original equipment.
> *Special Note: Stage II Chips are street legal in all 50 states. *CARB
> E0#D-234-4
>
> POWR-SHIFT:
> For the ultimate in performance the PowrShift combines a STAGE2 with an
> aggressive transmission program"
>
> ** What does it do?
>
> "The ECM in the vehicle looks at various sensors such as manifold vacuum,
> coolant temperature, throttle position and RPM, it then processes this
> information and adjusts spark timing, air/fuel ratio and other parameter
> according to the tables stored in the JET Performance chip/module memory. By
> recalibrating these tables we are able to tune the engine for the maximum
> horsepower and torque under various driving conditions."
>
> ** How do they do it?
>
> "The programming changes to each JET chip are extensive and include modified
> spark advance tables, air fuel ratio modification, torque converter lockup
> (in automatics), shift improvement in electronic automatic transmission and
> various other parameters to optimize the torque and horsepower curve for
> each individual application. Chassis Dynamometer tuning allows JET to
> develop a specific program for each application.
>
> Every vehicle is first tested in a stock configuration to get baseline
> dynamometer and track times. To do this the vehicle is connected to JET's
> custom data acquisition system to monitor various sensors. Engine
> temperature, spark advance and air/fuel ratios, all this data is then
> recorded and stored away for later comparison.
>
> >From there we start to modify the spark advance and fuel curve in 500 rpm
> increments until we achieve the maximum torque and horsepower at the drive
> wheels in each rpm and load range, this allows turning under all types of
> various driving conditions and not just wide open throttle, a decisive
> advantage to the JET chip!
>
> All the Data is stored on disk and transferred to the JET chip program so
> thorough track and street testing can be done under "real world driving
> conditions" to assure the Dyno results prove out on the road in decreased
> 0-60 mph times and quicker ? miles acceleration."
>
> - Bernd
Bernd,
Do you have the Stage 2 or the Power Shift? Any one on the list running one of
these?
Bernd......thanks for the explaination.
Regards
Bob
-- Lowered 1998 Metallic Red Extended Cab Western Chassis 2/4" Drop, Gibson Cat Back, Lund Roll Pan, Lund Wiper Cowl S/S Sport Mirrors, Lo-Pro Hard Tonnue over a Custom Bed, Home Grown K+N, F+B TB, Stillen Bumper Cover, Sony CDX-7850, Three sets of Infinity Kappa's, Three MTX 275x's, MTX Thunderform with 10" 7000's and a MTX 2130 Visit my Dak at http://www.geocities.com/motorcity/factory/7995 New Pictures "by Chuck" at http://www.intense99dak.com/bob.htm
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