21/07/2026
We don't post them as often these days, but the 200 Series engine and transmission tune is still one of the most asked-for tunes we do, and honestly, it's easy to see why.
If you drive one, you'll know the dance. You build up a bit of speed to coax it into sixth, then ease back off to sit on the limit. Trouble is, the moment you hit a headwind or the road tilts uphill, it drops straight back out of top — and you're doing the whole thing again.
Most owners just live with it. We don't reckon you should have to.
That's why we tune the engine and transmission together, as one job — because on a 200, the gearbox is half the story.
Here's what that meant for this post-DPF 200 we had in:
✅ Sixth gear commanded at 100km/h, with torque converter lock-up
✅ Torque converter lock-up from 80km/h in fifth
✅ Smarter shift points matched to our roads and our speed limits
✅ Further gear selection in low range, where you actually want it
✅ Around 30% more power and torque, right where it's useful
The result is a 200 that stops working so hard to do the same job — which, more often than not, the owner feels at the bowser too.
No piggyback modules. No lock-up kits. No wiring trickery. We reprogram the transmission's own brain directly, the way it should be done — backed by a serious amount of testing and research.
Got a 200 that's been driving you a bit mad in top gear? Drop us a message — let us sort it out for you!
📞 03 5277 2503
💻 www.geelongperformancediesel.com.au
📧 [email protected]
