I was thinking about overclocking CPUs and how the same chip is used for a broad range of processor speeds, just using different settings. That makes me wonder, are the 140hp and 170hp TDI engines the exact same engine, just with different mappings? Is there a reason to spend the extra money to get the higher HP engine, or would it be better to save the money and map the 140hp engine to higher? Thx for the input.