KR elimination Volume 2 (2000 SSEi)

[Allmachtige]

I'd leave the good sections alone, but I'm a newbie to tuning as well. Are you planning on using Eddie's Table Modifier for your MAF calibration? What are your most recent LTFTs ? It only took me 4 or 5 tries to nail down the VE table.

What do you mean "good sections"? Do you mean only smooth the area around the cell adjustments? If so that would be the 2nd (middle) table I posted above.

[99ssei]

You can smooth the whole graph. It may change some numbers that are good values, but not by much. It shouldn't destroy all the work you've done thus far. I always smoothed the whole graph, but if you have a huge section that's perfect, I'd try to only smooth out the areas of concern. Either way, you should be fine.

[Allmachtige]

Good enough? ...



This is another scan from the drive home after work. I think I'll do one or two more tomorrow morning just to make sure the kinks are out, but for the most part I think this is where I'll start MAF tuning.

[superchargedSSEi]

Close. Probably only one more revision is needed to get those positive LTFTs to turn slightly negative (or zero if you're lucky), and then you'll be ready for the MAF tune.

[Allmachtige]

Yeah I tried to do another scan last night after another 50% revision of what you see above and OMG the numbers were +8.

I wasn't doing a serious test, just me and a friend going to get some dinner, but it was pretty cool last night and I usually do my tests at dusk when its still 70ish out.

[99ssei]

Mine looked like your last graph and I moved on. I think you should be fine with what you got.

[Allmachtige]

HELP! I've tried running Eddie's Table Modifier Thingy as well as the ScanFormater excel macro tool, both fail.

The ScanFormater gives me a run time error and Eddie's Table Modifier just doesn't plain work (can't see any of my data).

Someone PLEASE run these files through any tool you have that works:

CSV:
http://ente.got-game.org/hptuners/MAF_sept20_01.csv

MAF and IFR tables:
http://ente.got-game.org/hptuners/IFR_01.txt
http://ente.got-game.org/hptuners/MAR_01.txt

[superchargedSSEi]

I've never been able to get a .csv exported from an HPT scan to work with Eddie's program. Even if you remove the headers from the top of the excel file and are able get the data to show up, the program thinks that the frame ID numbers are the FTCs so you can't filter the data right. I tried making a new table anyways to see what would happen and that didn't come out right either. It kind of sucks for you HPT guys since Eddie's program makes table editing almost idiot proof.

I'll try running the scan through some old excel spreadsheets I have and see how that goes. They won't care what the order of the data columns in the .csv are.

Edit: All of my spreadsheets are working perfectly. They're a little more labor intensive than an actual program, but they still get the job done and don't involve more than basic copy and pasting. Let me know if you want them.

[Foghorn]

You'll need Eddie's Table Modifier V6.5 to import HPT csv files.

Mapex's MAF modifier Excel file works well, it's more work but gives very good results.

Cheers,

[superchargedSSEi]

Just installed V6.7 of Eddie's program and it works great...it's nice being able to read the HPT files now. Thanks for the tip Foghorn.

Edit: Suppose a link would be nice for those searching for the program.
http://theblattners.com/projects/tablem ... fault.html

[Allmachtige]

Yeah I found a version of Eddie's that worked shortly after I posted this, sorry I didn't reply.

Its strange because the program adjusts my MAF up until I hit PE, then it doesn't make any adjustments of course. So...what do I do about 7500+Hz? Is this something I worry about later with O2 tuning? I ask this because right now my MAF curve is being changed in a way where it slopes up, then goes flat until it reaches the old slope in the higher area of the graph (WOT/PE frequencies).

[Allmachtige]

Here this is what I'm talking about:



That's my adjusted MAF (using Eddie's program) after this scan:

http://ente.got-game.org/hptuners/MAF_sept21_03.csv
http://ente.got-game.org/hptuners/MAF_sept21_03.hpl

Should I be clicking the "smooth" button or do I never adjust my MAF above 7500Hz?

[superchargedSSEi]

I wouldn't worry about it. The average LTFTs in the area around the bump were 5.5 > 4.3 > 2 > .4 > .1, so the bump itself is probably just an over correction for those higher averages. See what happens after the next scan, it should fix itself during the next adjustment since from the looks of it the averages will be negative in those cells next time around. You can smooth it out now if you'd like though...won't hurt anything.

Edit: What percentage of the fuel trims are you using for the adjustments?

[Allmachtige]

I wouldn't worry about it. The average LTFTs in the area around the bump were 5.5 > 4.3 > 2 > .4 > .1, so the bump itself is probably just an over correction for those higher averages. See what happens after the next scan, it should fix itself during the next adjustment since from the looks of it the averages will be negative in those cells next time around. You can smooth it out now if you'd like though...won't hurt anything.

Edit: What percentage of the fuel trims are you using for the adjustments?

That was my 3rd adjustment using Eddie's program, that's why I'm a little concerned because each adjustment ignores 7500+. I'll do another scan this evening and I think I'll try smoothing it a bit.

I'm using the default 50% of the fuel trims for adjustments.

EDIT: A secondary concern is that when I smooth the graph is requires numerous clicks of the "smooth" button, which in turn raises just about every cell (richer). I fear this could put me too rich and I'm trying to be as cautious as possible.

[superchargedSSEi]

Ah, thought it was the first revision using the program. The O2s are a bit light while in PE so I agree that the 7500+ portion of the table could be bumped up a bit to smooth things out, though I might wait to do it until after the MAF is calibrated. Avoid playing around with the MAF cells around the PE trip point if you smooth things out though, since changing those might have an affect on the WOT LTFT.

[Allmachtige]

So get everything below 7500Hz all set, THEN worry about smoothing the graph? Or smooth after the O2's are fixed?

[superchargedSSEi]

Either/or would work, as long as the LTFTs are fixed before hand. Smoothing the transition before the O2s are fixed would probably give you a bit of a head start on that portion of the tune though.

[Allmachtige]

Either/or would work, as long as the LTFTs are fixed before hand. Smoothing the transition before the O2s are fixed would probably give you a bit of a head start on that portion of the tune though.

Smooth entire or just the transition from 7500 to WOT/PE? I'm guessing the entire graph, but many times.

[99ssei]

When I did mine, we just smoothed the section (like 3 cells left and 3 cells right of the drop). If you do the entire graph, you'll throw off some of the numbers you've already found to be good. For now, you should focus on getting your below 7500 hz table stabilized. As mentioned before, the WOT MAF will be calibrated later.

[superchargedSSEi]

When I did mine, we just smoothed the section (like 3 cells left and 3 cells right of the drop). If you do the entire graph, you'll throw off some of the numbers you've already found to be good. For now, you should focus on getting your below 7500 hz table stabilized. As mentioned before, the WOT MAF will be calibrated later.

Agreed. The rest of the curve looks good so I doubt smoothing the entire graph will have much of an impact on fuel trims, but the transition area is so important to the PE/WOT LTFT (and such a sloppy area of the curve) that it should be treated as it's own section imo.