what i did notice today was when accelerating at medium loads from say 1000rpm etc i was getting the map page ball dropping to the 2ms row again! i tried various throttle applying techniques and it was difficult to replicate exactly what did it but i found more sudden movements of the throttle seemed to play a part. I feel i need to sort out the reducer next?LPGC wrote:A strange problem if, only when the interface/laptop are connected, you're getting problems running on petrol.
did some more testing last night went on freeway did several wot's on petrol and logged them with the wideband and mixtures were solid, i then repated the process with the laptop conected to the romano and on petrol consistant wideband readings on petrol, even though it was still flicking to the 2ms row, on gas low reg pressure was an issue at medium to high loads so couldn't test
Do you run your laptop and data logger from the vehicle battery, either directly or via an invertor?
laptop just runs off the laptop battery, and the wideband runs off the cig lighter, the datalogger is a feature of the wideband
You were getting 5Volts on the red map sensor wire - was that with the laptop/interface connected or without? The serial link can affect the voltage here.
re tested red map sensor wire and had 5.01v regardless of weather the laptop was conected or not
Did you try adjusting the extra injection filter (an above post)?
I tried playing with that but no change, i also noticed on the romano it has the anticipate injection sequence so tried that but no change
I think in the end your reducer pressure will at least be related. Other things I might try (on different attempts). 1. Put the same numbers that you have in your map in the 18ms row in the 2ms row from 4000rpm upwards. 2. For testing purposes only - lean off the map at 16 and 18ms duration, not to zero but to somewhere around 60% or 70% of the values already in those rows. If the engine still runs with that mixture (would expect it to be very lean in which case you shouldn't leave it like that) this will take some load off the reducer and injector duty cycle, might prevent the drop back to 2ms.
agreed reducer is defiatly a problem, i did try the different figures as you mentioned above in the map with no change, the engine was lean in the top end, reducer pressure is dropping quite low even with just medium throttle
In both the OMVL and Romano setup, what working pressure did you set? You might try setting working pressure to 0.9bar or SP and doing anogther full recal. Any pics of your maps and settings for both ECUs?
I haven't tried that yet, i feel i really need to sort out this reducer. I was gunna pull it apart but think it maybe time to just get a new one, i have noticed when the engine is first started cold in the morning and it opens the tank lockoff when it is getting ready to swtich to gas the reducer makes a rapid clicking noise for a few seconds? not sure if that has something to do with it though it has allways done it as far as i can remember. Should i stick with the omvl reducer? or do you know of a better unit that you would recomend
current romano map, i pretty much just punched in the same readings i had on the omvl map, though i have just realised the 2ms row on the omvl is all 135,
medium accel log you can see the glitchy ms with the red scribble next to it