All Things Mk5 > How to Guides / Troubleshooting

P0299 - boost pressure regulation

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Numero9:

--- Quote from: Pudding on December 03, 2022, 04:33:47 pm ---18psi sounds mapped to me. GTIs run a peak of 1 bar and ED30s run 0.9 bar.

You can easily tell if you have VCDS by checking the Flash count in the ECU info. Factory = 0.  The counter goes up 1 every time it's reflashed.

It's how dealers were rejecting warranty claims back in the day as you cannot go back to 0 again......which saw a huge rise in tuning boxes as they are invisible to the ECU.

The only way to go back to 0 is with a brand new 'virgin' ECU from VW. 

Off topic I know, but just for general info  :smiley:

--- End quote ---

Cheers pudding that is good to know. Where in VCDS does the flash count live?

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