Winter is here, and after failed cross-flash attempts, I’m replacing my ECU—at least we had some snowy fun while prepping the other cars!

Winter is coming and we are still stuck on the ECU in my 2012 Golf GTI Edition 35. The original ECU will not cooperate. After failed flash attempts with KESS, MPPS, ODIS Engineering and even BDM, we think the previous owners put custom firmware on it. So we bought a similar ECU with the same MED 9.1 version, hoping to cross-flash it with the correct software. That did not work either. Either we sourced the wrong ECU or cross-flashing is not possible on this hardware. Nearly 300 euros in, it was clear we needed a different approach. So I am buying a used ECU that should arrive with stock firmware already on it. It costs around 800 euros, but it looks like the only reliable way to get the car running properly again. Meanwhile the winter preparation is underway. The other cars are stored for the season, though not before we had some fun in the snow first. Cars ready to be stored for the winterGolf "R32" (GTI) 4wd k04 1.8TVolkswagen Bora 4wd k04 1.8T

Winter Ready Cars

Fed up with the 'riced up' look of smoked rear lights, I swapped them for original GTI Mk6 lights, giving the Edition 35 a more refined and color-matching appearance

The car came with smoked black rear lights. They can look good on a white or black Golf, but on my blue Edition 35 they did not suit the colour and made the car look like it belonged to an 18 year old. So I replaced them with original GTI Mk6 rear lights, which are almost identical to the Edition 35 ones (slightly brighter, since the Golf R and edition cars have dimmed versions). The smoked black rear lights that didn’t fit with the blue color of the car.I started by asking scrapyards for prices on regular Golf rear lights. One quoted 650 euros for worn old lights that were far from perfect. Then Sigurd sent me a Facebook Marketplace listing for original GTI lights in near perfect condition, at 1200 DKK (160 euros), described as brand new. The Marketplace listing for the original GTI rear lights in excellent condition.I got in touch to confirm the condition and shipping to Norway, and bought them. The total came to 254 euros with shipping and import fees, half the price of the scrapyard ones. When they arrived they were used and had a few minor scratches, but they were in much better shape than the alternatives. A polish will bring them back. How the lights came packagedThe rear smaller lightReplacing them was easier than expected, given the mess the previous owners left. Behind the panel there was glue, sugar cubes used as splicing connectors, and other makeshift fixes. The cable management was horrendous, and the resistor for the lights was dangling loose and knocking again

Replacing the Smoked Rear Lights

Sivert

After multiple failed attempts with MPPS, KESS, and Odis Engineering, my GTI’s ECU is still stuck with a bad tune—hoping K-TAG will finally restore it to stock

Tuning my 2012 Golf GTI Edition 35 has been a nightmare. When I got the car, the previous owners had clearly been into the engine map. The throttle was so sensitive that a light press of the pedal felt like half throttle, and it popped and crackled constantly. Driving it smoothly was nearly impossible, and I wanted it back to stock. The engine bay or car, with the ECU removedWe started by looking for a stock engine map online. We found a site selling .ori files for $20 and bought one. The first attempt was with MPPS, which we thought would let us flash the stock map onto the ECU. It took 10 to 15 minutes and finished with "ECU write complete". Then we started the car and nothing had changed. The throttle was still too sensitive and the popping was still there. MPPS flashing processWe tried KESS next, with the same result. The throttle was still unpredictable and the car still sounded like it had a popcorn tune. That left Odis Engineering, on the theory that a genuine VW tool would do what the others could not. I called a few dealerships. One reply stuck with me: when I explained that the car had been badly tuned by the previous owners and I wanted it back to stock, the dealer asked, "So you don't want your car to run well?" I said I just wanted the bad tune off. He said they could try, but there was no guarantee the car would start afterwards. They wanted 200 euros to attempt it, and suggested I go to a certified tuner instead. I went ahead with Odis anyway. Seven seconds aft

The Pain of Tuning My GTI

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