Duramax tuner

jtilles wrote:
Something to keep in mind as you look into "emissions on" tuning. Emissions-on tuning does not mean it'll pass a smog check in any of the 17 states that follow CARB's guidelines. Emissions-on tuning like Duramaxtuner is just that... they left the emissions equipment on the vehicle. Sure, you still have a DPF and SCR system intact... but is the truck emitting excessive NOx? Most tuners have no idea and/or don't care. As long as they make more horsepower, they're happy. DPF life shortened thanks to over-sooting? Also, not a concern.

The Banks Derringer carries a CARB E.O. That means you can drive into any smog check facility and pass the test. With the Derringer, intake, and exhaust you'll gain 98 hp. Yes, 98. This is dyno tested by more than a dozen third-party performance shops. A quick YouTube search will reveal the dyno testing.

Oh, and that dead pedal you're describing, Derringer, combined with the new PedalMonster throttle sensitivity controller will get rid of dead pedal completely.

You'll also find a Facebook group with over 3,000 Derringer owners who have millions of combined miles.

Since the EGR is turned off with "emissions-on" tuning, you are not rerouting exhaust gas back into the intake to cool down combustion temps in order to lower NOx. Cooling down combustion temps actually created more soot because the fuel is not completely burned and therefor clogging up your VG turbo and DPF with more soot.

The US NOx limits in the US are extreme compared to other countries which is why manufacturers like Cummins can get away with not having an EGR and run the SCR/DEF system more like the "emission-on" tuners do in the US. This cannot be done in the US due to how much of a hard-on the EPA has on diesels even though gas engines emit way more greenhouse gases. Also, NOx is only harmful in the lower atmosphere in highly populated places(think Southern California/New York) and is not an issue in less populated places where it has a chance to dissipate into the upper atmosphere where it is good for the ozone. However, every diesel owner has to abide by California's rules even though most of us don't live such highly populated places.

As far as the Darringer. The weakest link of a diesel pickup is the transmission. A diesel can easily handle an extra hundred horsepower or more and still go hundreds of thousands of miles. The same cannot be said for the transmission. Does the Darringer also tune the transmission (ie increase max line pressure, higher shift points, better TC lockup strategy) to handle the added power? I can grantee that a transmission replacement will cost a lot more than a DPF cleaning or replacement.