Coober USA KTM/Husqvarna/GasGas 300 TPI ECU

Jun 27, 2023

The Coober ECU is a plug-and-play replacement ECU for any model or year KTM, Husqvarna or GasGas two-stroke with TPI (Transfer Port Injection).

It is a complete replacement of the stock ECU that is under the seat and is a simple plug-and-play replacement. It is designed to improve the performance throughout the power range and improve the oil injection management. If you have a KTM or Husqvarna model with the two-position map switch, that is also supported along with all the stock warning-light functions.

List Price: $649.99

Standout Feature: Improved engine performance for your KTM/Husqvarna/GasGas 300 TPI two-stroke.

Improved performance throughout the power range.

Easy plug-and-play installation takes less than 10 minutes.

Improved oil-injection management will likely increase the life of your engine.

$650 is not cheap but the improved performance and likely longer life of your engine makes this a worthwhile investment.

KTM (and sister brand Husqvarna) introduced fuel-injected two-stroke off-road bikes with the 2018 model year. The TPI, Transfer Port Injection, models have some benefits to carbureted bikes including better adaptation to elevation changes and a closed-loop system that does not leak fuel out of the float bowl when the bike is tilted in awkward positions. But the fuel/air mixture is less than ideal, and most people agree that the TPI bikes don’t run as well as their properly jetted carbureted predecessors. The TPI bikes also seem to run a bit lean and have irritating detonation. Despite improvements with each generation since the 2018 models, the outright power is also not as strong as the old carbureted KTM’s and alternative brand bikes that still use carburetors. The factory-backed hard enduro racers that compete on the 300 TPI two-strokes have been testing alternative setups and the 2023 KTM XC (closed-course off-road) models have moved away from the TPI setup to a throttle-body fuel-injection system. The 2023 KTM XC-W (off-road) models (and equivalent Husqvarna/GasGas models) still use TPI, but we expect that will change for 2024, which suggests that the KTM Group R&D team is trying to regain the performance lost in the transition to TPI.

There are lot of TPI KTM’s on the market and despite the imperfect fueling, they are great motorcycles so there are several aftermarket products available to try to improve the performance and one of the best options we have tried is the Coober ECU.

Swapping to the Coober ECU is a simple process that takes less than 10 minutes to remove the seat and swap the ECU (there are a lot of online videos that show the trick to unplugging the connector). We first tried the Coober ECU on a 2022 GasGas EC 300 and were blown away by the noticeably improved performance. The bike runs better in every way right from the bottom and throughout the power range. The irritating detonation is gone, and we noticed that the bike uses more oil, which is better for the internal engine parts. The improvement was almost too good to be true, so we had a couple of other riders try our GasGas and installed it on another rider’s personal KTM 300 XC-W and had the same results.

If you are one of those people that likes to tinker with your bike’s “jetting” (fuel/air mixture), you may be disappointed to find that the Coober ECU is a locked system just like the stock ECU, but we did not feel any need to mess with it.

The $650 price point is certainly not cheap, but we felt that the improvement in performance is well worth it.CN

For more information, visit https://cooberecu.com