Ready to roll with the chimneys soon!
The solution for your Scania R660 with free exhaust
For several months of studies we have taken action and have carried out the removal of an SCR (Adblue) and DPF (Fap) device on the very latest Scania R660 in order to allow it to drive (on closed roads or during gatherings) in free escape. And yes ! this has recently been possible. The generation 3 DC16122 block which develops 660hp and 3300Nm of torque has no more secrets for us.
How is the operation going?
First of all, it is a reprogramming of the engine computer called EMS10 on these vehicles. Data emulation is done via direct connection to the ECU. Here the secure gateways do not allow us (any more, compared to the 650), to intervene via the manufacturer’s OBD socket. It does not matter we have the parade so that you can enjoy the sound of the V8 in free exhaust mode and especially WITHOUT DEFECT!
The reprogramming is carried out in 2 stages, the first consists in recovering the data of the truck as well as all the engine mapping. The goal is to emulate all the parameters so that the system does not fail at the slightest opening of the valves.
Once the program has been “remodeled”, we therefore write it to the computer’s memory and carry out some physical finalizations on the vehicle. That’s it, now it’s time to test.
Switch mounting, to activate at your convenience
The goal being to remain legal, it is quite possible to install the device on a switch. This allows you to drive freely with your R660 where it is authorized. To put a Scania R660 in free exhaust, it is mandatory to install valves to deflect the exhaust gases. We explain to you to make it simple:
When you switch to free exhaust, your exhaust gases are deflected and no longer go through the original exhaust circuit, so the exhaust gas temperature sensors, the NOx sensors, as well as all the emission-related peripherals are disturbed. This results in a fault on the dashboard indicating an engine malfunction, an exhaust gas problem as well as a limited driving time before engine torque restriction.
There are 2 solutions, either you do not particularly want to mount the exhaust on a valve and in this case it will be mandatory to remove the two particle filter cartridges. When the adblue and fap system is deactivated, the regenerations as well as the consumption of adblue will be zero. The particulate filter (FAP/DPF) will clog up over time.
So for an ADBLUE AND DPF OFF solution on Scania R660 without switch you must remove the 2 DPF cartridges. Of course you won’t have a fault in the dashboard but you are not legally allowed to use the truck on roads subject to European legislation in terms of emissions, that’s another subject.
The second solution is to mount an exhaust valve with a line. On the one hand it makes a nicer sound on R660 and on the other hand it allows you to stay legal. Opening the valves will divert the exhaust gases. In this case it is mandatory to deactivate the adblue as well as the FAP thanks to the switch system. You can even leave both DPF canisters in the exhaust system. Note that you must put the switch in the ON position if you want to use the valves, otherwise you will have a fault since the truck returns to its original configuration. However, if you want to drive with the exhaust closed via the original DPFs then you must in this case, set the switch to OFF which reactivates the entire Adblue/FAP emission system and regenerations.
Increase power? possible ?
Obviously we did not stop at the removal of the device in order to be able to drive with your Scania R660 in free exhaust. Our engine optimizations also improve the torque and power curves. The Scania 590 and 660 are also twins and both allow you to go from 660hp to 750hp, combining reliability and power. The torque meanwhile goes to 3550Nm.
