Now you are changing it around to being more interested in maximizing performance in 3rd rather than take the typical viper owner route and just aim for the largest number possible. This is also shedding a lot of light on your understanding of what is going on.
Uhh...if you were paying attention you'd probably pick up on the fact that different gears have different ratios which effectively place a different load on the engine. Meanwhile, you're still dead certain that the additional heat is causing a "parasitic loss".
Maybe you should stop trying to rationalize why what you think/thought was correct and try listening and learning what is really going on. You will be a better person for it in the end. There is nothing foolish about being incorrect, but insisting that your mistakes are correct because of ego just makes you look like a fool.
Seems like you need to take your own advice. lol
Are you saying that a dyno defies the rules of science? That could shed some light on your humerus theories on how it works. It is a science, follows the rules of physics, and there is no magic about it. The variables which are not typically controlled because of logistics absolutely affect the outcome and adhere to physics, not black magic that is inexplicable.
It's the variables that make it imprecise. Dyno tuning is an analog process. It's not like digital where every copy is exactly the same as the source. Cars are also different - do you really believe all cars of the same make/model will dyno exactly the same?
That was a whole lot of wasted typing as this has nothing to do with dyno numbers changing because of parasitic loss from a different ration. Thanks for explaining that shorter gears change the way a car performs though. Good info to have! You are just going in circles, sometimes contradicting yourself.
Seacrest OUT!!!! I mean it this time.
It's not a parasitic loss; it's a mechanical loss. A parasitic loss would be an additional load placed on the engine that wasn't there before, like turning a supercharger.
Thanks for cutting some time out of your brony-con circuit to sit at the adults table with us and explain the intricacies of heat and parasitic losses.
Last time I checked, my ECM tune didn't change because of what gear I was running.
ECU = engine control unit. The gear you run in changes the load on the engine...pretty simple concept.
Doing dyno runs in 4th isn't a right or wrong thing, it is just the most accepted practice.
Apparently not. You just seem to believe it is which is the crux of your problem. You're filling in a lot of what you don't know with baseless assumptions.
Assuming 4th is typically the 1.00 ratio gearing. Just sort of a way for dyno operators to build a nice database to compare different vehicles, while trying to keep variables in gearing to a minimum.
Yet all cars are unique and wasn't one of my points something like using dyno numbers to compare cars being a bad idea? Yes, it still is a bad idea. It's no different then believing that you can look at a car's rated HP and nothing else, then accurately predict its lap time.
The other reason for using a higher gear is to get a broader spectrum of data points to easier analyze the tuning map.
This is correct. Maybe you're finally catching on...
Try tuning a 1,000 rwhp vehicle in 1st gear, and let me know how that works out for you in 4th gear.
Pretty sure I said that the cars I did tune were done in 3rd. Maybe it's just me but if I thought 1st was the better option wouldn't I have said that?
If anything, your statement about preferring 3rd because you only use 3rd is just silly. Your dyno graph and logs will be smoother and cleaner during a longer 4th gear pull. That means your car will also perform better in 1, 2, and 3. Also, the longer smooth pull will allow the engine sensors to report more stable data, which also makes it easier to tune. So no, 4th isn't a requirement - it just makes more sense, and is the most common practice.
And this is where you start to get things wrong again. The whole point of tuning a car on a dyno is to optimize the HP/TQ curves for the type of driving you plan to do. As long as the dyno has enough time to capture the data the graph will be accurate enough to work with, and you'd make changes until it's as "smooth and clean" as you want for gear you're optimizing.
No, it doesn't "make more sense" to prefer 4th and it's not "common practice". It makes more sense to you and it's your practice. Let's be clear on that.
Here is a dyno graph showing 4 consecutive gears. Why wouldn't a tuner want to use the broad spectrum of data and smoother curve in 4th to create a fuel and timing map?
Seems like you're not the guy to talk to if the goal is to get the best tune possible. Why bother with an ECU if we're going to use static fuel maps for all gears, with no regard as to how the engine performs under the varying loads presented in each gear? Maybe we should replace ECUs with a punch card. Isn't that smoother to work with than a computer? Plus you can use scrape ice off your car if you're ever stuck in a snowstorm.
Now tell us, what are these magical 3rd gear racecars you speak of? The longer you wait to reveal this expertise, the more we are thinking you are just full of crap. I can't wait until you tell us it was some kind of go-kart or other weak-powered contraption. Maybe in that vehicle, 3rd gear took 5 minutes to make a pull?
Wasn't this idiocy the same thing Jack said, confidently stating that all manual transmissions have a 1:1 drive. Oh, but I guess the SRT4 and Evo 8 and 9 are "go karts". I see.
Here's the thing - I'm not the guy trying to sell other members on dyno tunes or whatever it is you do. I have no reason to fib about my dyno tuning prowess and am only interested in getting insights into the Viper...you, on the other hand, kinda have to make it seem like you know what you're talking about since you expect people to give you money for your services.
Most of your response has amounted to little more than "that's how it's done because that's how I do it", claiming I am "wrong" for suggesting that there are other/better ways to do things.
Try tuning a car (any car) by optimizing it for the most frequently used gear rather than the one that gives you the prettiest graph. Don't worry, once you see that it's the better way you can say it was your idea.
