Big Rig Owner

September 2013

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42 September 2013 High Performance Diesels > DD4 Emissions Testing At Pittsburgh Power Inc., we have always believed that allowing more airflow into the diesel engine for combustion and allowing the burned exhaust gases to pass freely through the exhaust manifold, turbo and performance muffler with as little backpressure as possible reduces emissions. The OBVIOUS benefits have always been improved fuel mileage, horsepower, responsiveness and cooler engine temperatures. When the semi truck is properly driven, with the driver paying attention to the turbo boost gauge, pyrometer and tachometer, or using the Kevin Rutherford Edition Scan Gauge and knowing what these gauges mean, the above statement is ALWAYS TRUE! It's stood the test of time and is all about optimization, or in this case, the pursuit of perfection on the part of the driver and his/her driving habits. Learning to drive between 58 and 62 mph also greatly improves the fuel economy along with decreasing emissions. Somehow, at these speeds, we STILL get where we are going. Rarely does driving faster actually make a big difference in time saved, but it ALWAYS costs more in fuel. Our government is very concerned about emissions, and so are most of us in the transportation industry. We are 'outdoors' people and spend most of our time outside - whether we're driving, working on trucks with the garage doors open, or enjoying our sports. hpd 0913.indd 1 by Bruce Mallinson At Pittsburgh Power, our new engineering center has been open for six months, and great strides have been made with our Desktop Simulator to find problems with ECM's. We recently tested two Detroit Reman ECM's and BOTH were defective. Right out of the box, we were not able to repair them, so we returned them to Detroit. With this in mind, think about how many times the following scenario occurs: You have what most shops consider an ECM failure, a new Reman ECM is installed, and the original problem remains. Our desk top simulator has become a wonderful diagnostics tool for the Detroits, so we are in the process of building one for the ISX Cummins and the Caterpillar Engines. It's so much more economical to find the problem first, and then fix it as apposed to throwing parts electrical parts at the truck that most shops won't take back. Emissions testing The engineers at Taylor Dyno have been working with our engineers and as of July 15 we will be able to test all of our products and your truck for emissions. Testing started on the DD4 Detroit the week of June 24th and with what I mentioned about air and exhaust flow, this is what we found: Stock DD4 with waste gated turbo, Knox g/bhp break hp-hr was 4.45 With our ported and ceramic coated exhaust manifold, 3.68 Along with the manifold the 15% larger turbo, non-wasted gated 3.16 This test was performed with a Sem- 8/7/13 11:56 AM

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