What is the sound of one piston slapping?
What is the sound of one piston slapping?

Hypothetical question - I own a TDI sportwagon. I don’t want VW to reflash my ECU. I voluntarily void my powertrain warranty by flashing something like an APR tune. Is it possible for VW to “flash over” it? Is there a way to lock the ECU down?

For the record, I think if you tried doing this, VW would insist you buy a new ECU with updated tuning, but they’d have to give you the old parts back if you asked. In either case, you can keep your flashed ECU. Jetta TDI cup edition for your time because I like it more than the sportwagon

Illustration for article titled Question on aftermarket ECU flashing for the VW TDI motors....

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