Actually that's an excellent question, and one more suited to a technically savvy tuner.. which isn't me.Hussain wrote:josh i have a question for you. CVT can be put on a dyno but people say its not dyno'able because it wont give accurate HP numbers.... what about the other advantages of putting a car on a dyno? if you put a CVT car on a dyno will you still be able to adjust the fuel to air ratio and tune it to work better with your aftermaket parts and new maps and all that good stuff? ior is CVT on a dyno a huge fail and does nothing but waste money?
The dyno does work with the CVT, it accurately measures the amount of horsepower being transmitted through the driveline, but with an additional factor that takes consideration that isn't normally present with previous transmission technologies in automatic transmissions, being that the trans itself is variable, so a 1:1 configuration isn't possible, and can vary by conditions.
So the trouble really lies with back to back evaluations of power gains, and quoting that specific number that is the actual gain, eliminating the CVT factor into said numbers.
This, however, would not change air/fuel ratios, and the internal diagnostic abilities present with modern day tuners in regards to the actual ECU, which is the point of tuning.
So yes, if a tuner is accurately modifying everything, including fuel maps, etc., it would be increasing horsepower (or fuel mileage, depending on the goal), and all of the additional features you've read about, even with the CVT, the problem comes down to quantifying that, and without an engine dyno, or anything beyond a variable transmission, becomes the problem with the "prove it to me" issue with the CVT..
In regards to the CVT function, it's controlled by it's own ECU functions, and I haven't heard of Bully Dog or others tapping that specifically to involve any tuning or power gains..
