Ben C

That has to do with Windows scaling in my experience.

You can chop off the plastic from the end and just have the Thermistor poking in.

That's verging on money back type mistake. Hope they sort it without much hassle

Based on that info yes it could be tune related. Bit hard to guess any further.

both fit the same base. Stupidest design ever.

area all of the relays the same? Are you 100% sure the pins are correctly wired? You may not be aware that there are 2 wiring configuration of relay pins that fit the same base........ IF you mixed up a relay that will explain your issue. the Mac valve cant magically created an energy loop out of nothing.

you can lock the timing to any value, then match that with the timing light. If your engine hates 10 degrees set the base timing to a higher value when calibrating.

add crank enrichment. a fair bit. you want it to fire first to know it is the crank enrich at play, if it takes ages to fire it is normally crank enrich. E85 ends up with large numbers for cold crank enrichment, so don't be scared of big numbers in the lower temps.

thats good for 28Kpa boost, so no its not good for you. not sure nay factory NA car uses a MAP sensor capable of reading much boost, let alone 2 Bar boost, it doesnt make any sense for them to sacrifice accuracy for increased range for no reason at all. it is kind of odd that the LS3 can even read positive pressure. i thnk you googled the wrong part number, heaps of info if you google 12591290 you get the info. that is the GM part number, the other one is the Bosch number.

Dont just rely on Adam to sort it out, the tuner needs to be aware of the throttle issue, thats pretty important considering it is a safety issue. It could have been an oversight, however shouldnt have happened. The warning comes up and is pretty clear that it is just for setup.

could we edit the file to incorporate the new layouts into existing? Looks like it is possible from my quick glance at it. cheers.

many things can cause that. attach your tune and a log. How hot is the fuel getting? Injectors wont be fault.

post a pic or the file. You sure the scale is MGP and not MAP?

What is the actual concern here? That the government could alter your tune? And kill you?

I would definitely set to 1000hz and see how it goes. Where did the 80hz come from?

Yep, must be in the manual or info onkine somewhere. 80 is a fair way off 500 as minimum!

I believe that is way too low. Needs to be above 500hz from memory

what frequency do you have the output set at?

Thanks Adam, i had thought of doing a 4d table to address it, and thats fine, however not understanding the real cause of it is bugging me. At the end of the day I want to move on, but not knowing is annoying. i feel like i tell myself to move on, but cant do it! I have already moved on many times...... All good, i will update down the track if I come up with anything of interest!

If i had entered the base flow at 400Kpa it would be correct, however i put it at 300Kpa. I will change it to 400Kpa like it should have been. So it looks like i need a hole in my VE table, rather than a smooth transition that I am expecting? Is it not odd to need to reduce the VE with an increase in MAP?

ok. I would love to put this to bed..... to me it really seems as though i am getting more fuel from somewhere. the last log i posted shows this , same value from fuel table and pulse width gets bigger. Looks like my differential fuel pressure changes. At idle the reg cant dump enough fuel to get to desired base pressure, tune is set to reference the FP sensor. wonder if i should just turn it up to 4bar base and see how i go.... **edit, that has made me realise something. Going from the GM data into LINK software i think i stuffed my injector flow rate at base pressure. it should be 920 at 3 bar base, I have 1030 entered. thats a fair difference.... In my defense the way the injector data is managed in the GM computers is a bit odd......

Cheers mate, Definitely have good grounding, the ECU is powered from the original oem ecu power, not sure how that relates to the injectors however confimred with meter at injectors with fan on voltage matches Link reading. i think i am going around in circles, I believe i just need to sort out the VE table better and all should be good. Got in my head something else is happening, when it likely isnt! For the moment I will use a filter to get rid of data with fan on (to ease my mind) , get the VE table sorted then see what happens when looking at the data with the fan on In the process though have got the fan turning on much better, not using the Fan step has helped, now RPM barely dips when fan comes on.

This snip of a log shows it occuring while driving. something strange is happening as it is showing richer with same pulsewidth.... something weird is going on...... can confirm this does not happen with fan relays removed, not sure what to make of that!

Tune has been adjusted, i have gone with 10Kpa steps in vaccuum. Came from the factory ecu that had 5kpa steps, and i think i need the extra resolution. I realised accel enrich Deadband was set to 0.1%, changed that to 1% and the revs are much more stable when the fan turns on. There was a spike of accel enrichment occuring that definitely wasnt helping! tune attached. I am using values in the idle ignition control that worked well with the factory computer. still seeing idle go richer with fan on... can live with it just didnt think it would happen, and dont fully see why it is happening. VY_BASE_Hp VE_REV19.pclr Log 2020-09-27 11;53;07 am.llg got rid of engine fan step in idle control, that has helped. Now idel ignition is more consistent. still seeing rich condition. Log 2020-09-27 12;09;41 pm.llg

Thanks for the suggestion to simplify the table. I added the breakpoints due to the fueling going rich, thinking that would make it easier, however that hasnt been the case! I have made some changes, removed breakpoints however still seeing the mixture go rich when the VE table value stays the same. Not sure if i am overthinking it or should just leave it alone. idle log attached if anyone is interested! I have just noticed accel enrich is kicking in briefly when fan turns on . that cant be helping but dont see the obvious way to stop that. Log 2020-09-26 2;44;45 pm.llg