![]() And at partial throttle openings, the 20% throttle boost makes the car feel more responsive. With the Diablosport tune the response feels quicker and stronger. In the stock car, there's a noticeable lag between stomping on the pedal and the presence of hard acceleration. I can say that its response to throttle was noticeably quicker than the stock programming. I have driven a Stingray basically the same as mine with with a Diablosport tune installed, and 20% throttle boost programmed in. If you increase that by 20%, it could mean that 50% pedal travel now means 42% throttle opening (35% plus 20% of that, or 35+7). Let's say that 50% pedal travel normally translates into 35% throttle opening (just chose that number out of thin air - I don't actually know how the throttle is programmed). I haven't been able to figure out exactly what that percentage means, but can make a guess: This setting means that for any amount of pedal travel, the throttle opens further than it does with the stock programming. It also lets you optionally change the throttle response by selecting a value between 0 and 20%. It still won't give you full throttle immediately in low gears, but it allows more throttle than the stock programming. When you apply one of the canned tunes, it addresses number 2, above, by reducing (but not eliminating) torque management. The Diablosport does two things to improve throttle response. I think there is a similar restriction in second gear. I don't remember all the details, but as one example (IIRC) the computer won't allow full throttle in first gear below 3500 rpm, even if you stomp on the go pedal. ![]() The Corvette implements something called "Torque Management." Designed to protect the drivetrain (maybe) and the driver (probably), it limits throttle opening when you mash the pedal to the floor in low gears. Second, even pushing the pedal to the floor won't always get you 100% throttle opening in low gears. In Track and Sport, the same amount of pedal movement will give you more throttle opening than in Tour or Eco. How non-linear it is depends on driving mode, too. The smaller the gas pedal movement, the more non-linear it is, and by the time you get the pedal all the way to the floor you will (mostly, but not always) have 100% throttle opening. 50% of gas pedal travel is less than 50% throttle opening at the engine. Sorry this is long-winded, but modern drive-by-wire throttle systems aren't straightforward.įirst, the throttle on a stock C7 is highly non-linear. It feels like a different car, the way it should be IMO. W/ both working simultaneously and w/ the ability of the vitesse to be set on the spot at 20 different levels then I can go from very low response (under GM's), to stock, all the way to insane (the vittese max + 20% of diablo). Not sure if the diablo changes priorities, the vitesse doesn't as it is a piece of hardware altering the GM transducer output on the gas pedal. In both cases, there is definitely something going on along the lines of at x% stroke give me greater y% throttle as the pedal surely feels shorter. To be honest, when I say linear I'm not even sure b/c w/ electronics you could even make it give you more than 1:1 on the 1st 1/4 or 1/2 of the pedal stroke and that is the way it feels to me but don't have numbers to back it up. On vitesse I don't know the maximum but I'm sure it feels more linear/aggressive than the diablo 20%. Obviously you cannot have 20% at zero stroke or 120% at full stroke of the pedal so my guess is that the 20% is the average increase in between 0 and 100% of the stroke. The diablo will give you up 20% max increase but I'm not sure what they mean by that. I have both the vitesse and the diablo intune i2 mounted "on top" of each other.
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