Smarty softwares do NOT accelerate the blockage or failure of Diesel Particulant Filters, they actually lessen the frequency of regeneration. (ie: fuel economy increases and longer DPF life) MADS has proven FANTASTIC results with our latest emission testing. Not only have we DECREASED each & every measured emission value, we have shown a 25% INCREASE in fuel economy, in the city driving emissions test! Sitting idle on our hands? I don't think so... ...