If you chose to send in your IDM to be modified (no core charge), then you must place the order online, as well as including the (completed) form from above. We will not process the billing until your unit has arrived, is modified, and is ready to be shipped back. All credits (for cores) are issued as a check to your billing address.
The HiVHiHz IDM is a rebuilt unit, which has been modified to increase both the voltage & the frequency of the signals that fire the fuel injectors. 30rwhp increases are common on mildly modified 7.3L Power Stroke engines.