FFS is definitely safer. Anti-lag is great if you have a deep pocket or if you dont use it alot. Basically when you are off the gas, the timing retards like 50 degrees, and the injectors spit alot of excess gas, which ignites in the exhaust manifold, creating extra pressure in the manifold keeping the exhaust wheel spinning( and a nice flame out the exhaust), all of this causing a ton of extra heat in the exhaust manifold, turbine housing and exhaust. At least this is how it worked on my DSM. I know most everyone knows how it works, but just thought I would enlighten the ones that didn't know