I started including the power-torque curve (.cap and .ini) since my 2014 performance package, the introduction of the new generation of hybrid power units, because they had totally different characteristics to the normal aspirated engines (V8 or V10) in original GP4. Simplified, you can say that physics and power-torque should be according to each other to match the characteristics of the engine, while the performance file is more about the distribution of performance through the field.
Former performance packages do NOT include an extra power-torque curve, because the one built-in in GP4 "will do the job".
Actually, if you go further back to the previous turbo era, there should also be a special power-torque curve, but i had not the data or the time to deal with it. A future project perhaps, who knows! Anyway, there is a problem for seasons with different types of engines (turbos and normal aspirated), because GP4 can handle just one of them.
To sum it up:
For the V6 turbos you have to have the complete package, for V8 or V10 physics and perf files alone will give you good results if you have (nearly) the same bhp in both ( a rough estimate is to have bhp in a range of 800-900 bhp). First generation turbo engines need a complete package but, as far as i know, there is none available.
The name of the .cap file is irrelevant! The file contains both code to be patched and address where to be patched! You can rename it to whatever you want and it will still work, as long as it is placed in the patch folder!
My personal GP4 files at : www.4shared.com ______ My Blog at : Gitanes GP4 work
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