Monsterbishi Posted March 17, 2021 Report Share Posted March 17, 2021 We've got a 2L non-turbo engine that we've just switched from traditional to modelled, 559cc@310kpa injectors. The only problem is that the VE tables at idle are in the low 100's and it quickly max's out at 150 under load. Injector size is set as per the manufacturers (Grams) documentation, engine size, all the fuel density values, etc all appear correct. The only way we've found of getting the VE's down to a believable level is by halving the Injector Flow@Rated Pressure - what other variables are out there that can cause such a significant shift across the entire VE table? Fuel pressure at the regulator is reading correctly on both a analog gauge and it's sender too. Can post/attach more detail after work, thought I'd get in early... Quote Link to comment Share on other sites More sharing options...
Vaughan Posted March 17, 2021 Report Share Posted March 17, 2021 attach a copy of your map please Quote Link to comment Share on other sites More sharing options...
Monsterbishi Posted March 18, 2021 Author Report Share Posted March 18, 2021 Here you go, how much influence does the charge temp approximation table have? Base Map 18-3-21 Modelled.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 18, 2021 Report Share Posted March 18, 2021 All the basic settings look like they are in the correct ballpark, can you give us a short log of it running. Leave the injector flow set to the manufacturers value and give it whatever VE it needs to run. Where did that fuel pressure sensor calibration come from?, it doesnt look right since it is reading 66kpa with the engine off. Most pressure sensors start at 0.5V for zero pressure and increase only to 4.5V and rated pressure. Unlikely fuel press would make that much difference but still needs to be correct. Your charge temp table looks fine as a starting point. I would suggest turning off the IAT trim but that is not going to help your situation. Quote Link to comment Share on other sites More sharing options...
Monsterbishi Posted March 18, 2021 Author Report Share Posted March 18, 2021 Willdo, won't be able to get back to it this week - will correct the fuel pressure table and grab the log, 64kpa would be about a 9psi margin of error, about 20% of the injector rated pressure. Quote Link to comment Share on other sites More sharing options...
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