Nearly any engine can benefit from a catch can. Piston engines produce pressure in the crankcase (basically the lower half if you picture from the crankshaft down) as the pistons pump up and down. If that pressure were to build it can reduce ring seal, hence the purpose of the ventilation system. Because of emissions reasons, however, that pressure cannot be vented to the atmosphere, so the manufacturers have to route it into the intake manifold so that it can be burned in the combustion chamber. The gasses from the crankcase carry emulsified oil that coats the intake runners (producing that sludge you see when you remove the manifold on a high-mileage engine), and degrades the octane of the atomized fuel entering the combustion chamber. In other words, it's killing the octane rating on that big tank of premium you just paid for. The vehicle's ECU will protect the engine by reducing timing, but performance suffers, and this is even with a stock tune. The ECU reduces timing any time it sees detonation, and it can sometimes be excessive. Adding a tune can aggravate the problem in the sense that you won't be getting the performance that the tune was designed to produce.
About DiabloSport Parts & Accessories
DiabloSport is an industry leader in developing new vehicle technology for late model domestic cars and trucks. Instead of focusing on developing products that "fit" your vehicle like other manufacturers such as cold air intakes and exhaust, we focus on communicating digitally with your vehicle in order to control the "vital organs" of your vehicle. Our expertise is the capability to understand and improve complex computer systems while providing our customers with easy to use products. While we have huge investments in high tech machinery in order to manufacture all of our products in house our real assets are our employees combining for over a century of automotive experience. We employ the best of the best in each category from software and hardware engineers, tuners and calibrators, sales and marketing and of course technical support specialists. The true test of a company is "do your employees use the products you manufacture" and a quick walk through our employee parking lot paints the picture of a very enthusiastic group of hardcore automotive individuals.
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