I have been studying their site. I really like the idea of the telma, wish I could see one in operation. I am just weighing the cost of each. I think in the end I would be happier with the telma.
I will bring some experience to the table here! Take it for what it is worth!
Pre and real early eteck there was An exhast brake Option called Stealth brake!!!! To install this unit we were required to remove valve covers and replace or add valve seals and replace valve springs to install these! Having said that the unit helped on engine braking a fair bit ! We however started having issues with turbos on these the exhaust gasses started over coming the shaft seals on the turbo on long downhill grades pushing the gasses into the base causing horrible blowby issues ! the fix was a special turbo with extra sealing rings on the shaft seal! if you plan on going this route.
Don't say you weren't warned!!!
Just saying!
Telma
I have nothing bad to say about this unit , other than the extra weight added they function great!