Skeptical of that honestly, as indications are that the spoiler is pretty ineffective for its designed purpose. This suggests that either it's geometry/design is wrong, or that the overall geometry of the rear of the vehicle would defeat any reasonable attempt at producing efficient airflow (There's no doubt an element of this).Nobody is going to beat what Hyundai did.
Vortex generatores are used to preserve a laminar flow over an airfoil at high angles of attack. ... they increase lift at low speed. ... they also cause drag.
If you want more range, add a PSI to the tires and drive slower.
Are you sure these are genuine vortex generators? They look like they are too 'fat' and will cause a local acceleration in the airflow causing a lateral vortex and local drag behind the object. It seems these will only cause interference and some form drag.
This is what I remember as being a vortex generator.Thank you for the advice, yes bought the bortex generator from Amazon, right now ordering Eco-Fin from eBay.
Deemed as original vortex generator, previously known as Airblade