Someone experimented a Steinbauer box? For diesel common rail, this kit does not increase rail pressure nor boost pressure and are suitable with DPF because there is a connection to the accelerator wire. In opposite, Speed-Buster box multichannel increases both, although controls temperature of exhaust gases to protect DPF. In the middle, we can find P-Tronic, Spider, V-tech boxes which increase slightly rail pressure but with multi-ignition maps there is no problem with DPF.
All those brands are good? All reliable?
What´s your opinion? Thanks
