Hello all,
I've had a burning question for a little while now..... I know there isn't much love for the CVT in the enthusiast world but it looks like they are coming even with us kicking and screaming.
The new 2015 WRX has the first "performance" CVT as far as I know. It works like any other CVT but will simulate an 8 speed transmission when called upon.
Cars accelerate quickest at the torque peak and reach the highest speed at peak hp correct? What happens when we monkey with the factory tuning and the torque peak shifts higher or lower in the RPM band? If CVT tuning isn't accounted for are we at a disadvantage?
I can see a scenario where said car makes 280 ft-lb at 5k RPM but the CVT has it pegged at 6k because that is where it was factory. Am I missing something or over simplifying it?
I assume a CVT still accelerates best when left alone and the simulated shifts are more for entertainment value than performance?
I also wonder if a CVT could be used to build boost more quickly from a stand still? Start with a taller ratio for load, spool the turbo, drop the ratio and accelerate? Maybe this has no advantage over a brake stand...
I remain a die hard fan of the 3rd pedal but don't know that I will row my own forever. Also as a Subaru fan, it looks like its CVT or walk.... Its unfortunate that you won't be able to row your own in a 6th gen Legacy.
I've had a burning question for a little while now..... I know there isn't much love for the CVT in the enthusiast world but it looks like they are coming even with us kicking and screaming.
The new 2015 WRX has the first "performance" CVT as far as I know. It works like any other CVT but will simulate an 8 speed transmission when called upon.
Cars accelerate quickest at the torque peak and reach the highest speed at peak hp correct? What happens when we monkey with the factory tuning and the torque peak shifts higher or lower in the RPM band? If CVT tuning isn't accounted for are we at a disadvantage?
I can see a scenario where said car makes 280 ft-lb at 5k RPM but the CVT has it pegged at 6k because that is where it was factory. Am I missing something or over simplifying it?
I assume a CVT still accelerates best when left alone and the simulated shifts are more for entertainment value than performance?
I also wonder if a CVT could be used to build boost more quickly from a stand still? Start with a taller ratio for load, spool the turbo, drop the ratio and accelerate? Maybe this has no advantage over a brake stand...
I remain a die hard fan of the 3rd pedal but don't know that I will row my own forever. Also as a Subaru fan, it looks like its CVT or walk.... Its unfortunate that you won't be able to row your own in a 6th gen Legacy.
