Software for Optimal VehiclePerformance
Custom diesel calibration engineered from the code up. Unlock the true potential of your truck.
PRODUCTS AVAILABLE TO AUTHORIZED DEALERS
Our calibration software is sold exclusively through our authorized dealer network. Log in to your existing account or apply to become a certified Down Under Performance dealer.
Existing Dealer
Already part of the network? Sign in to access your full product catalogue, orders, and support tickets.
LOG IN →Become a Dealer
Interested in offering Down Under Performance products? Apply for dealer authorization and join our global network.
APPLY NOW →Power. Precision. Confidence.
Down Under Performance was built by diesel enthusiasts who live and breathe the machines we tune. Our team combines hands-on racing experience with deep technical engineering — the kind that comes from years spent inside the software that controls modern engines.
We're based in New Zealand and serve a global dealer network, bringing true reverse-engineered diesel performance to the world.
