zok wrote:If you want to make a DIY piggyback, I can upload the last revision of a well-proven schematics - I tested it on more than 100 cars. :thumbup:
Zok, I would say go for it! ;D Let us see what you have.
I agree with you, that it is a good solution for owners who really don't want to spend 200+ on proper chiptuning, but wish to have more power from their cars; it's just cheap.
A good DIY for older VAGs (VP pump) is also 100% better than a cheap 50-100 bucks tuning box - you can make a 2 channel one with MAP and pump "adjustment" fore much less than 50 bucks, for what you get just a resistor on a timer....