Got my Cortex a week ago and love it! It appeared that tire size on the cortex was set to 31.5" so I adjusted it to 33" which is what the stock 275/60/20 tires should be..correct me if I'm wrong. Driving today with the gps I noticed that my speedo was about 3-5 mph faster than what the gps said. Should I adjust it back to 31.5"??? Thanks for the help

 

I called Superchips with the same question/concern. I was told they found most tires @ 275/60/20 are actually smaller than 33 inch.

If you find your tires are in fact taller, change it to that, but I doubt they're actually 33 inches tall. Measure to the center of your tread.



PS I adjusted my settings to 33in too prior to calling..... lol

 

To correctly set tire size:

1) Make sure the tires are properly inflated.
2) Measure from the ground to the top of the tire - use a level to get a more accurate measurement.
3) Enter the tire size to the closest 1/4"

Waalaa - GPS and SC are now in sync.

 

hey wich one is the best to get for the 4.7L FlashPaq or Cortex

 

If you plan on keeping your '03 for a while, it may be more cost affective to get a used flashpaq 3815 as it supports the 03-08 years- just make sure it's NOT VIN locked or it would cost you another $100 to get it unlocked. The 3815 does NOT support the Advanced Trans Upgrade and the '03s also are not supported by the Advanced Trans Upgrade.

The few differences between the Flashpaq 3865 and Cortex 3950 are:
1) the Cortex supports a wider range of vehicles.
2) the Cortex offers a two year drive train warranty which is voided when the Advanced Trans Upgrade is purchased and there may be a limitation on number of miles the truck has.

Bottom line: Flashpaq would be your best bet. Whether you choose to purchase the 3815 or 3865 is up to you.

Good Luck!

 

so the 3865 flashpaq for the 03 4.7L 2wd??

 

so the 3865 flashpaq not good for the 03 4.7L 2wd??

 

No, no, no, the 3865 is the next generation to the 3815. It will do the same exact thing as the 3815 for your 03. I was only trying to save you a few pennies by pointing you to the 3815. The 3865 will do you well.

 

What would a SC tuner do for a 2003 Dakota, 4.7V8 Auto 4wd

 

We provide all of the features and options for your specific vehicle on our web page when you use the search by vehicle icon: http://www.superchips.com/Store/tabi...q/Default.aspx

For your convenience here is the data from that link:

The Flashpaq performance tuner is the best selling handheld tuner in the industry. The success of the tuner is due to its' quality, innovation and performance results. The Dodge Gas Flashpaq (part no. 3865) delivers more to-the-wheels power than other popular tuners all while eliminating common problems found in the other products. The results for your gas powered truck, SUV or performance car are industry leading and the features list lengthy including multiple power levels and a variety of user-tunable options. The first time you get behind the wheel you will notice improved throttle response, high-end drivability and outstanding power gains.
Features & Benefits

Complete drivetrain tuning for your Dodge truck, SUV or performance car; Chrysler performance car or crossover

Multiple performance tunes included for all vehicles and heavy load towing for truck and SUVs

Industry leading horsepower and torque gains

Automatic transmission optimization

Speedometer calibration for axle gear and tire size changes from 22.5" - 42"

Advanced tuning selections from rev limits to shift points

Monitor engine and transmission parameters

Read and clear diagnostic trouble codes

Free internet updates


NOTE: Features vary be year, make, model and engine. Search by vehicle in question to find out the details. All Superchips tuning products for gasoline-fueled vehicles are either covered under CARB Executive Order number or are in a pending state. All non-racing Superchips tuning products for diesel-fueled vehicles are on the CARB products in progress list pending CARB testing and approval.


Make: Dodge
Model: Dakota
Year: 2003
Engine: 4.7L

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Power Gains:
Power figures not available for all vehicles and tune levels.
Dyno Sheets Power Level Max HP Gain Max Torque Gain
91 PERFORMANCE 21.9 HP @ 5900 RPM 19.4 TQ @ 3900 RPM

Available Options:
Select a power level to view tuning options.
Power Levels: select
87 OCTANE, 91 PERFORMANCE, TOW MILEAGE XS
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2003 Dakota Specific Features Supported:
Adjust Rev Limiter
Adjust Shift Points
CAI Support
Internet Updateable
Read and Clear Trouble Codes
Spark Advance
Speed Limiter
Tire Size Calibration