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Trying to follow along with tuner thread, to get info and form an opinion. But I don't follow lots of the acronyms - please interpret
ViEDs - VIEDs, SERT, TTS, PCV, SEPST. PV, VE Tables, and any others that may help. Thanks
Trying to follow along with tuner thread, to get info and form an opinion. But I don't follow lots of the acronyms - please interpret
ViEDs - VIEDs, SERT, TTS, PCV, SEPST. PV, VE Tables, and any others that may help. Thanks
DK has explained a number of these terms in his post above.
VIEDs are a device for fooling the ECM into thinking that the air-fuel mixture it created was too lean, forcing it to add fuel. It does so across the closed-loop range (which, by way of the AFV, spills over somewhat into open-loop as well) and so is a blunt instrument way of enrichening the mixture.
SERT is either Screaming Eagle ROAD Tuner or Screaming Eagle RACE Tuner, depending on who you ask. The difference is important as (at least) one of them cannot enrichen your tune. SEPST is the Screaming Eagle Pro Super Tuner, and is much more capable.
TTS stands for "The Turbo Shop", but most people just know them as TTS. Their MasterTune product is (IMO) one of the best two tuners out there at the moment, the other being DynoJet's PowerVision (PV) (not to be confused with the far inferior PowerCommander, version 5 of which is known as PCV).
The VE tables (Volumetric Efficiency) measure how much of the theoretical volume of air actually gets sucked into the engine for a given engine speed and throttle opening. They should only be editted systematically via either auto/smart-tuning or via a dyno tune by someone who knows what they are doing. They are not used to make a mixture more or less lean (that's the job of the AFR table) but instead to ensure that the mixture you have targetted actually gets achieved.
Here's another resource you might find useful in understanding how they all work together:
PCV and PV are DynoJet tuners - Power Commander V (five) and Power Vision respectively. PCV is an add on tuner while the PV is a flash tuner.
The VE table is a table of the engine's volumetric efficiency (VE). This describes how effective the engine, intake, ports, and exhaust design are at flowing air thru the engine. Accurately recording this at different places on the mapping matrix is critical to getting a good tune. If you know how much air the engine flows, you can determine how much fuel to mix in...
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Help with tuner acronyms - PLEASE
