Medium and heavy duty trucks get horrendous fuel economy when there are several filters restricting airflow on the exhaust. Recently the EPA shut down productions on diesel programmers for the newer trucks (2007+) because they eliminate the DPF and its use. This not only kills jobs and sales to companies that produce the tuners but also the supply of fuel and money the drivers of these trucks have to pay when they are only getting 10 mpg when they could be getting 17-20 mpg with the removal of exhaust filter components. Fed up with the fuel economy on my powerstroke, I ordered an H&S tuner only to get the message that the EPA no longer allows the production of it. We demand the EPA be put on a leash and allo us to do what we want to help our trucks and our wallets.
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