Only got to spend 30-45ish messing with the tune since putting the new flow rate in before my clutch master decided it didnt want to work any longer. I still love the 32 year old girl. So in the mean time I figured I would still just upload where I'm at with the tune and a quick data log that might get odd at the end becuase thats where I started losing clutch. Anyone wants to put there 2 cents in on it feel free or if you think you can clean it up nicely off the short data log I would not try and stop you lol. I wish I had more time to keep playing with it but I already ordered the new master so hopefully sometime next week.

 

Gentleman, Ive just been going thru things again as I still dont even like the 70% VE. I am going thru that data log and im curious as to why when my fuel pressure is reading 45 at this moment that the box is hovering over the 50-55psi section? My plan was to adjust primary deadtimes until I can get the idle in more of the 50ish VE range but just came across this and wondering what would cause it and if its an issue I clearly need to figure that out first


IGNORE THIS! I realize now its not based off the fuel rail pressure...forgot its the fuel pressure as well as manifold pressure giving the injector differential

 

Assuming you've configured your base fuel pressure correctly on your regulator as well as under the 'Fuel Tuning' tab I'd recommend having a number display of 'Fuel Pressure Expected' next to your fuel pressure number display rather than watch the pressure differential table.

 

Wait this might be where my issue has been. Here is the deadtime table from ID that I entered. Should the table actually be voltage vs fuel pressure or fuel pressure expected in nsp, and not entered as voltage vs injector differential as I did? (it was how the table was and didnt think twice on changing it until now)

 

It should be not be differential pressure, it should be fuel pressure.

 

Alright that right there sounds like where I messed up. I hated that it didnt say just fuel pressure when I initial entered numbers but also at that time was brand new to the nsp and didnt even know how or let alone that you could change that table axis, which right then and there I should have looked into it. Been melting my brain learning deeper and deeper into the tuning the last few weeks but didnt even once think back on this since understanding the software way more. Ill get these all re entered and come back when I see what it does in the car.

 

Well I warmed the car up on the tune it had. Entered the new dead times and flow rates based off the correct axis this time. I also realized I was testing base fuel pressure with the engine idling and vacuum line off and it was around 45 but realized I just needed to prime the pump engine off so set it for 10seconds and my base fuel pressure is actually 52. Entered that into the software and now my idle VE is 59. Started snowing for the first time this year so cant go out and try it plus im still waiting on the clutch master but im guessing my entire tune will be out to lunch now so start from a fresh smooth one again.

 

Anyone know what the voltage range is for the link 4 bar map sensor is? This info seems to be hard to find and I want to double check it to what I have entered.

 

@Howard Coleman might know. He is a Link guy

 

i use a Honeywell pressure sensor for my MAP however a quick check w Google AI shows:

.2V = 20 kPa
4.8 V = 400 kPa

good luck

 

I don't have the exact data you're looking for, but I'm running a Link 4 bar MAP sensor with my Link G5 Neo-4, so that sensor is one of the pre-calibrated sensors I can choose from the Link tuning software drop-downs. It's a linear response MAP sensor, and Link's canned data puts the "low" error value at 0.05V and the "high" error value at 4.95V. So your "low" point should be something > 0.05V at 0KPa MAP, and the "high" point should be < 4.95V at 400KPa MAP

^That looks right, and matches what I was able to find online.

 

I thought these numbers seemed crazy high when I saw them but I accidentally looked past they are in absolute pressure. Changed my units and entered it and now it looks much more normal. I appreciate the response guys! This confirms what I went with. Have a few things to do today but hopefully the weather stays nice and I can give this a go. The VE map is getting better and better and the % is getting lower and lower. I think this should be the final issue solved fingers crossed. I also found an OLD ID2000 data sheet that was much more what I remember when I bought them long ago. The dead times were lower then what ID website shows now for the nsp software so changed those as well.