Instruction Manual: Whipple Tomahaw k_R2
Last Updated: December 11
th
, 2017
Page 3 of 3
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9.
Once you’re done flashing, cycle the key off for 5 seconds, then back on. Select the “Diagnostic” tab, read all the
DTC (trouble codes). Erase all codes. Note: De-energizing relay code is common after flashing and will go off after a
few driving cycles or if you hit clear DTC 5-6 times. The vehicle will run proper even if this code is on.
10.
After flashing the PCM, a crank/profile relearn is required. If you get a random misfire code or hard starting issues, a
crank relearn will need to be done. To perform a profile relearn, start the engine, leave the vehicle in PARK. Select
the “Diagnostics” option. Scroll to the Profile Relearn and click enter. Follow the onscreen instructions. Note that the
engine must be at normal operating temp (160deg F+) to perform this test. If you begin the test, but leave it
unfinished, it will set a crank learn DTC as it erases the original data. Therefore, to run properly, this procedure needs
to be finished to remove this DTC.
11.
After flashing PCM, if the axle ratio and/or tire size is not stock. Turn the ignition key to the “ON” position (no foot on
brake). Click the “Diagnostic” tab. Scroll to the Tire/Axle Change and hit Enter. Using the on-screen instructions
and arrow keys, change the axle ratio to desired ratio (ex. 3.55, 3.73, etc). For tire size changes, tire size is the tire
circumference in millimeters. Measure the rollout of the tire, to convert from inches to MM, multiply by 25.4. Example
(97.48” x 25.4 = 2476mm). Another, less exact method, measure the height of the tire, multiply by 3.14 to get the
circumference. Hit enter when done and follow the on-screen menu to complete the tire/axle changes. You may do
the tire and axle at the same time, or just one.
