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to test all possible combinations, which just isn't going to happen. The best we can do is look at what we have and although it is somewhat limited given we aren't testing each variable independently, the data still gives insight. It isn't like I'm just looking solely at one of these three cars - we are aware of the differences in hardware, so the spoolup data and power/torque data give us some clue into how the differences in parts are affecting these three systems as a whole. Even just doing one change at time will only tell you exactly what the performance difference is for the setup in which it was tested on. Ex: A cam upgrade is going to offer different performance benefits for different setups of turbo/manifold/exhaust/etc etc; same thing holds true for any single component change within a given setup: the exact quantitative impact on performance only applies to that setup. What we are specifically looking at here is qualitative rather than quantitative, but at the same time, some quantitative assumptions can be reasonably concluded. I would say that given the data we see, Seb's car will see an improvement in power/torque across the board once he goes to 2.5" intake piping and larger intercoolers, and I would hypothesize that it will be in the neighborhood of around 30-35RWHP almost entirely across the RPM band. And he still has other upgrades he can do to improve on that even more. We know it wont hurt his setup (qualitative) and we can presume 30-35RWHP based on historical data (quantitative). This forum is mostly composed of engineers and computer gurus, who dont like the touchy-feely component of a qualitative analysis: they want hard, solid numbers. Unfortunately until they realize that no one is going to test all possible combinations of parts, we can only really go on this qualitative analysis and make quantitative assumptions. In the end, they still get their hard and fast numbers from the dynocharts, but even still some of them cry about the difference from one dyno to the next, or that it wasn't a same-day affair. What more can they ask for? The impossible.
[ ashspecz.com ]
[ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor.
Albert Einstein
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