My car is driving me nuts, turbo questions, etc
08-21-2012, 02:23 PM
#21
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I don't have the software to open up the log file but just by looking at the first few lines, the fuel scaling is off.. adjustment for 750cc injectors should be closer to -67% not -44%
By the way, why 750cc injectors? They're pretty big, it's going to be kind of a pain to tune them.
If you can't get it to turn over with the proper injector scaling, something has to be wrong. I would check fuel pressure
There is one setting in the FIC that could be set wrong. I don't remember exactly what it's called but it represents the time it takes the injectors to open up (in milliseconds). Something like injector response time. This value has a significant effect on the fuel map scaling, especially for low load (short injector pulses). I would start the map with the proper scaling for the injectors, and then play with that value (also search online for info on it) until you can get the car to run.
By the way, why 750cc injectors? They're pretty big, it's going to be kind of a pain to tune them.
If you can't get it to turn over with the proper injector scaling, something has to be wrong. I would check fuel pressure
There is one setting in the FIC that could be set wrong. I don't remember exactly what it's called but it represents the time it takes the injectors to open up (in milliseconds). Something like injector response time. This value has a significant effect on the fuel map scaling, especially for low load (short injector pulses). I would start the map with the proper scaling for the injectors, and then play with that value (also search online for info on it) until you can get the car to run.
08-21-2012, 02:27 PM
#23
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I would check the ECU's fuel trims (via OBD2). If the LTFT is big (either + or -) then the map needs adjustment. Also watch what happens to the STFT when you go to that 3200 point.
08-21-2012, 02:34 PM
#24
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yah i changed the response time to approx 1100 iirc, it runs a hell of a lot better than it did previously, i lowered the fuel pressure some and it still bucked, maybe ill try to go the other way next time
large injectors for ALL OF THE BOOSTS lol, im lookin for somewhere around the 350-400 range and smaller ones probably wont be enough
when i had the scaling down to around -65 at idle, the car wouldnt even crank over
i think my next test is gonna be to make a noid light...
large injectors for ALL OF THE BOOSTS lol, im lookin for somewhere around the 350-400 range and smaller ones probably wont be enough
when i had the scaling down to around -65 at idle, the car wouldnt even crank over
i think my next test is gonna be to make a noid light...
08-21-2012, 02:50 PM
#26
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well with the vacuum line disconnected its at around 35-38psi iirc
what should it be like?
im gonna order a bluetooth adapter so i can rock the torque app, couldnt hurt
what should it be like?
im gonna order a bluetooth adapter so i can rock the torque app, couldnt hurt
08-21-2012, 03:05 PM
#27
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Hm, I thought stock was like 42 with the line disconnected (don't remember for sure). Close enough though, the ECU's LTFT should compensate for the difference.
08-21-2012, 06:04 PM
#29
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I don't have the software to open up the log file but just by looking at the first few lines, the fuel scaling is off.. adjustment for 750cc injectors should be closer to -67% not -44%
By the way, why 750cc injectors? They're pretty big, it's going to be kind of a pain to tune them.
If you can't get it to turn over with the proper injector scaling, something has to be wrong. I would check fuel pressure
There is one setting in the FIC that could be set wrong. I don't remember exactly what it's called but it represents the time it takes the injectors to open up (in milliseconds). Something like injector response time. This value has a significant effect on the fuel map scaling, especially for low load (short injector pulses). I would start the map with the proper scaling for the injectors, and then play with that value (also search online for info on it) until you can get the car to run.
By the way, why 750cc injectors? They're pretty big, it's going to be kind of a pain to tune them.
If you can't get it to turn over with the proper injector scaling, something has to be wrong. I would check fuel pressure
There is one setting in the FIC that could be set wrong. I don't remember exactly what it's called but it represents the time it takes the injectors to open up (in milliseconds). Something like injector response time. This value has a significant effect on the fuel map scaling, especially for low load (short injector pulses). I would start the map with the proper scaling for the injectors, and then play with that value (also search online for info on it) until you can get the car to run.
This is called injector pulse width! Also Faith, is your car relative cold blooded. What is your base fuel pressure with NO vacum to the FRP? I had mine at about 48 Psi. My car was cold blooded bad with only 43lbs of fuel pressure that little extra fuel pressure helped out ALOT! Also what firmware are you running. I was having the issues with going into boost and it would take a split second for the fic to see it, and the car would jolt/stumble then rip. Change your firmware to hex110! that solved it, the FIC has a hard time reading injector signal if not 110, also heard 104 works to...
08-21-2012, 06:16 PM
#30
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