Originally posted by Diesel_vert
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Possibly true but possibly not. The engineer may find, for example, the brakes are no longer adequate to support the power increase. Then an inocuous $750 tune has turned into a modifcation worth several thousand dollars at least and probably much more, given the starting price for engineers is $1,000 upwards.
I was only ever interested in a mild optimisation in any case. As I say, the engne is already 90% there as it is, but the smoothness, driveability and linear power delivery can all still be improved over the stock engine. I never wanted to tune the engine to the point where I had to start considering other things such as the driveline, brakes, etc.
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