Haltech miliseconds for cold starting
11-13-05, 02:46 PM
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miliseconds for cold starting
what correction % are you guys running for cold start
how many MS are you firing for? it is cold here in wa but it is not freezing yet
how many MS are you firing for? it is cold here in wa but it is not freezing yet
11-15-05, 12:42 PM
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This is a very relative question, because he correction maps will greatly depend on a few things, what vehicle this is (different engines react differently to different temps), where in the world you are (denver, Co, isnt the same as miami, Fl), and a few others like intake plenum, head designs, etc.
Trial and error is usually the best way to find out what your engine likes best. This means trying to run the car right when its coldest, and raising or lowering the compensations to make it work right.
Trial and error is usually the best way to find out what your engine likes best. This means trying to run the car right when its coldest, and raising or lowering the compensations to make it work right.
11-15-05, 03:14 PM
#5
Cold start and idle have to be done on feel IMO. Every engine is different and you'll just play with it until you find what's right and what that particular engine likes. I've built two identical engines that need subtle tweaks between them to idle correctly.
That said I've found a rough ballpark for idle and coolant correction is to try to keep the A/F ratios in the 12 - 12.5:1 area. When the engine is really cold it might want something a little fatter. Coolant correction is sometimes frustrating because you only get one shot at it before the engine warms up and you'll have to wait hours for it to cool to try it again.
That said I've found a rough ballpark for idle and coolant correction is to try to keep the A/F ratios in the 12 - 12.5:1 area. When the engine is really cold it might want something a little fatter. Coolant correction is sometimes frustrating because you only get one shot at it before the engine warms up and you'll have to wait hours for it to cool to try it again.
11-25-05, 07:53 AM
#6
Originally Posted by C. Ludwig
Cold start and idle have to be done on feel IMO. Every engine is different and you'll just play with it until you find what's right and what that particular engine likes. I've built two identical engines that need subtle tweaks between them to idle correctly.
That said I've found a rough ballpark for idle and coolant correction is to try to keep the A/F ratios in the 12 - 12.5:1 area. When the engine is really cold it might want something a little fatter. Coolant correction is sometimes frustrating because you only get one shot at it before the engine warms up and you'll have to wait hours for it to cool to try it again.
That said I've found a rough ballpark for idle and coolant correction is to try to keep the A/F ratios in the 12 - 12.5:1 area. When the engine is really cold it might want something a little fatter. Coolant correction is sometimes frustrating because you only get one shot at it before the engine warms up and you'll have to wait hours for it to cool to try it again.
The coolant correction map, will only affect the idle portion, and not the startup, correct?
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