Partial boost tuning

K-Series Programmable ECU installation questions / support issues
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Razathorn
Posts: 469
Joined: Tue Jun 14, 2005 12:17 am
Location: Lenexa, Kansas, USA

Partial boost tuning

Post by Razathorn »

So, I went out and tuned all 12 cam angles (6 low, 6 high), leaving zero's a bit on the rich side and hitting up 10-50 high and low to as close as 13.0 - 13.3 as I could get it (Yes, i'm NA at this point, not boosted). I also retarded ignition to address knock with 91 octane (based off of coldair calibration). Basically when I made fuel adjustements, I adjusted the engire map range for a given rpm point to suite the results I got at WOT. For instance, I would do a WOT run then adjust all of 4k to remove 2% fuel if I needed 2% less at WOT columns. This is using conrads method of tuning fuel. I assume this is fine since below 80kpa I will be in closed loop anyway. I can always go back and datalog and use the long term fuel trims as a basis to update the maps.

So, I did all of this as practice for when I get a supercharger so I'm more familliar with tuning kpro before boost. I realize that once I get to boost, I will be tuning the boost columns at maximum boost for most of the range and partial boost for some of the lower rpm columns since it takes some rpm to get full boost even with a supercharger.

Should I use the same method for tuning fuel in this environment... always altering all map for each rpm point? When should I start making more granular fuel adjustments based on map?

My plan, knowing what I know now, would be to WOT tune fuel and ignition using the same adjustment of all map columns for the given rpm points. Then, after making a composite cam map, I would then go back and try some part throttle / partial boost / (even potentially 7,8,9 columns) tuning of fuel for the compoisite cam angle setup.

Is this correct or is there a better way to do this?
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