På MVPMotorsports.com står det inget om att den behövs till v2 men under ver 1 står det såhär:
•HKS Twin Power DLI-2: Because the AEM EMS converts your car to using wasted spark technology, it is virtually required to add a DLI ignition amplifier. We know of no one to date that has a properly running & tuned Supra with an AEM that has not installed the HKS DLI or DLI-2. The DLI was discontinued in 2005, the DLI-2 is the current product on the market. The DLI-2 has always worked flawlessly for us and we highly recommend it over the AEM CDI.