With a new ECU, smoother shifts, and winter-ready tires, the GTI feels closer than ever to its original factory perfection.

With the new ECU installed the GTI is finally back on the road, and the difference is night and day. The over-sensitive throttle is gone and the shifts feel smooth. It drives and looks like it is back to factory standard. With the engine behaving, the next job was winter tyres. The old ones had hardened with age, and we live further north than the previous owner, so our winters are harder. Snow melts and refreezes into ice, and the gravel the city puts down just sinks under it. Winter tyres are not optional here. The old winter tires. It is a studless tire, which you probably could guess sucks on ice.I wanted Nokian Hakkapeliitta 10s, but the 18 inch rim size meant no local shop could get them. Ordering online would have added shipping and handling, so I settled on Continental IceContact 3s. They are not as well known as the Nokians, but they will do. Winter driving here means taking it easy on icy corners whatever tyres you are on. With the car stable and ready for winter, there are a few jobs left. The injectors we got back from BAR-TEK in Germany came back with problems: three of them leak. The original Bosch injectors are discontinued, so finding genuine replacements has been hard. After a lot of searching I found a French supplier who claims to have four brand new genuine Bosch injectors in stock, listed as "BOSCH NEW". I am taking them at their word. The first photo of the car after fitting the new ECU. She runs smoother than ever with the stock firmware and tune.Every 

Back on the Road

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

Sivert

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