To SD tune or not?
TECH Enthusiast
Joined: Nov 2006
Posts: 620
Likes: 0
From: Katherine N.T Australia
Guys this is really being overcomplicated and it shouldn't be.. Its not that hard. I've left my charge temp blending and filter stock without issue. Now what I've done over time is build my VE at a certain temperature (30c in my case). Its been dialed in close enough to 0 BEN and applied. Now I've done the same BEN logging at higher and lower temperatures and instead of applying the BEN's to the VE table I've averaged them and applied it to the VE IAT table in O/S 5 at an average temp of the temps logged at the time. Then simply linear filled the remaining cells. Done, no more temperature drift problems associated with SD.
This is my VE IAT Table Factors to give you guys an idea of what it looks like.
LABELS IAT VE Multiplier (Factor)
IAT °C {link: SAE.IAT} Value
-40 0.911377
-30 0.924037
-20 0.936698
-10 0.949358
0 0.962019
10 0.974679
20 0.987339
30 1.000000
40 1.019376
50 1.038752
60 1.058128
70 1.077503
80 1.096879
90 1.116255
100 1.135631
110 1.155007
120 1.174383
130 1.193759
140 1.213135
This is my VE IAT Table Factors to give you guys an idea of what it looks like.
LABELS IAT VE Multiplier (Factor)
IAT °C {link: SAE.IAT} Value
-40 0.911377
-30 0.924037
-20 0.936698
-10 0.949358
0 0.962019
10 0.974679
20 0.987339
30 1.000000
40 1.019376
50 1.038752
60 1.058128
70 1.077503
80 1.096879
90 1.116255
100 1.135631
110 1.155007
120 1.174383
130 1.193759
140 1.213135
