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Hi, Its my first time using a standalone ECU to set up a engine and I have clearly got a problem or a setting wrong but i have no idea what it could be.
The engine is a SR20DET Stock, The Engine runs well on the factory ECU but when I plug in my Haltech ECU and use try to set the base map up to be usable to get the car to the dyno I run in to problems.
In order to get the engine to idle at target lambda I'm having to set the base VE table to 20-25%VE and as far as I know that simply cant be right, after a lot of testing and checking I have been unable to see what could be wrong. there are also idle and "tip in" problems but I don't think I can look at them until I have this sorted first as I suspect its all related.
With the VE table set to base the lambda is closer to 0.5-0.6. I have checked the timing serval times as well as confirmed the injectors are stock with stock pump and regulator. I have check the TPI is reading 0 at 0 and a number of other prestart checks but could always be missing something I simply don't know.
I have attached the most up to date map i have attempted to use, any help would be appreciated.
https://mega.nz/file/V81nUKhQ#t5mG4k9w7pCJE2wczrvWz_Zyfj5-2D-1bv1zdb75Yz8
This is a copy of the map before running it as when attempting to run the engine the base fuel would need all cells at or around 1000 RPM to read 20-25 and this clearly is wrong.
if you can provide a PC log that will help. FYI, when fiddling with base idle, use the base - closed loop table under idle control.
Its also handy to look at the built in idle control dashboard haltech provides. Its useful to see what all the idle control stuff is doing in one spot
Have you confirmed injector settings(flow rating and dead times) and fuel pressure are correct?
MAP sensor is reading sensibly?
Please upload a PC log if you can. I'm happy to look at the log and see what I can find. What can sometimes happen, is that your fuel system may be set as the wrong pressure type for the fuel system installed. If the system isn't using a fuel pressure regulator with a vacuum hose running to it, then you're probably going to want to change the "Fuel Pressure Input Type" to Constant, rather than MAP Reference. If this is the case, and you're on MAP reference, the system will assume that your fuel pressure is below 43.5psi at idle (since your MAP sensor will say that it's in vacuum), and will add pulse width to keep the fuel mass matching the calculated air mass based on the other engine parameters.
There are other possibilities too, but having a data log would help narrow down the areas to check. If you can get us a full PC log, that would be awesome.