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Message: [QUOTE="CATDiezel, post: 717683, member: 4387"] multiple injection events are much more efficient than a single shot injection. More horsepower can be derived from a common rail multiple injection verse a single injection event. This has been proven by engineers in lab coats! LOL As already mentioned cylinder pressure spikes are more prominent with a single shot vs a multi-shot. A cleaner burn is also achieved by "preheating" the cylinder with the pre-injection to main injection. ON another note.--- Some of the injection points can be eliminated. Good luck finding the proper timing curve to keep cylinder pressures in check without doing pressure transducer module testing to "SEE" where you are in relation to TDC/Pressure. Too much pressure can have an adverse affect on the bottom line when it comes to peak performance. Most tuners take a shot in the dark and use the SOP method. [/QUOTE]

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