The DiabloSport Modified PCM is a professionally unlocked powertrain control module that replaces the locked factory unit, which lets custom and preloaded performance tunes be flashed to the engine. A DiabloSport inTune i3 or Trinity 2 tuning device is required to install a tune, and the modified PCM is not compatible with other tuning brands.
Specifications:
- Brand: DiabloSport
- Product line: Modified PCM (professionally unlocked)
- Device type: Powertrain control module (PCM)
- Fuel type: Gasoline
- Custom tuning capable: Yes
- Required tuning device: DiabloSport inTune i3 or Trinity 2 (sold separately)
- Compatible with other tuning brands: No
- CARB (California) compliant: No
- California Proposition 65 warning: Yes
- Part number: PCM-JGCV815
Fitment: 2015 Jeep Grand Cherokee (Limited, Overland, SRT, SRT8, Summit).
Emissions compliance: This part is legal for on-street use under the EPA Tampering Policy of November 23, 2020 in states that follow that policy. It is not currently legal for sale or use in California, where CARB testing is pending. A California Proposition 65 warning applies.
FAQ
Does this modified PCM need a separate tuning device?
Yes. The modified PCM replaces the locked factory unit, and a DiabloSport inTune i3 or Trinity 2 device is required to load a tune. It is not compatible with other tuning brands.
What does part PCM-JGCV815 fit?
It fits the 2015 Jeep Grand Cherokee (Limited, Overland, SRT, SRT8, Summit).
Does the PCM arrive pre-programmed?
Yes. Each unit is professionally unlocked and programmed for the listed application, which removes tuning downtime during installation.
Is this modified PCM street legal?
It is legal for on-street use under the EPA Tampering Policy of November 23, 2020 in states that follow that policy. It is not currently legal for sale or use in California.

