I bailed on $58, at least for now.

I got an $8D bin almost perfect, believe it or not.

Question:

I'm enabling PE at 80% tps which seems to be working fine. Should I set the MIN MAP for PE way up to avoid a fuel flood condition while getting to boost, or do you think it wouldn't matter anyway?

My PE afr is set to 10:1 (dunno real AFR, have no wideband) but thats putting me in the 900mv range under boost. I dont have enough room to test it to 6,000 RPM so I dont know about duty cycle just yet.

Max timing is 23.9d, with 10d initial, and NO pe advance. I'm maxing out the 100kpa column at 1800rpm.

On cold start, I get about 50 knock counts which I think is the blower complaining (noisy thing). Otherwise I get no knock whatsoever.

I'm feeling better than I did this morning..

<PRE>

Spark:

20.0 20.0 20.0 20.0 20.0 20.0 17.6 16.2 14.1 12.0 9.8 9.8
20.0 20.0 20.0 20.0 20.0 17.9 14.1 12.0 9.8 9.8 9.8 9.8
20.0 20.0 25.0 29.9 28.1 23.9 21.1 17.9 14.1 12.0 17.9 17.9
23.9 23.9 29.9 35.9 35.2 34.1 30.9 28.1 23.9 15.1 17.9 17.9
26.0 28.1 35.9 40.1 38.0 35.2 30.9 27.1 25.0 20.0 23.9 23.9
35.2 39.0 41.8 41.1 38.0 36.9 33.4 29.9 27.1 23.9 23.9 24.3
38.0 43.9 43.9 43.9 41.1 38.0 35.9 33.0 29.9 26.0 23.9 23.9
36.9 38.0 43.9 43.9 41.8 40.1 34.1 34.1 29.9 27.1 23.9 23.9
39.0 41.8 46.1 46.1 40.1 40.1 38.0 34.1 30.9 28.8 25.0 23.9
37.6 43.9 46.1 46.1 40.4 38.0 36.9 33.0 29.9 28.8 26.4 23.9
38.0 42.9 46.1 46.1 40.1 38.0 34.1 29.9 28.1 26.0 23.9 23.9
38.0 46.1 46.1 46.1 40.1 36.9 33.0 29.9 27.1 25.0 22.1 23.9
38.0 46.1 46.1 40.1 36.9 30.9 29.9 28.1 25.0 23.9 22.1 23.9
38.0 46.1 46.1 42.2 36.9 30.9 28.8 27.1 25.0 22.9 22.9 23.9
40.1 40.1 46.1 46.1 40.1 34.1 28.8 27.1 25.0 23.9 22.1 23.9
38.0 46.1 46.1 43.9 40.4 35.2 32.0 28.1 27.1 25.0 26.0 23.9
38.0 46.1 46.1 46.1 38.0 34.1 32.0 29.9 28.1 28.1 27.8 23.9

VE:

31.6 32.4 39.8 43.8 48.4 53.5 57.4 58.2 59.4 61.3 64.8 67.6 72.3
35.9 39.8 43.4 47.3 52.0 56.3 59.0 60.2 61.7 63.7 66.0 68.0 72.3
39.1 43.0 46.5 51.6 56.6 60.5 62.5 63.7 65.2 68.0 69.5 71.1 75.0
43.4 47.3 50.8 54.3 60.5 62.5 64.5 66.4 67.2 70.3 71.9 74.2 76.6
44.9 49.6 45.7 49.2 52.7 54.3 56.3 57.8 58.6 71.5 72.3 74.2 77.0
46.5 50.8 46.5 50.0 53.9 55.9 57.4 58.2 59.4 71.9 72.7 76.6 78.9
48.4 52.7 48.0 51.6 54.7 56.3 58.2 59.4 60.9 63.3 64.5 62.9 75.0
50.0 54.3 49.6 52.3 55.5 57.0 59.0 60.2 62.1 64.1 64.8 63.7 75.8
50.8 55.1 51.2 54.3 57.4 59.0 60.9 61.7 62.5 64.8 65.6 64.1 75.8
52.0 55.9 51.6 54.7 58.2 59.8 60.9 61.7 62.5 64.8 65.6 64.1 75.8
53.1 56.6 51.6 54.7 58.2 59.8 60.9 61.7 62.5 64.8 65.6 64.1 75.8
54.3 57.4 52.3 55.5 58.6 60.5 60.9 61.7 62.5 64.8 65.6 64.1 75.8
55.1 59.0 62.9 65.6 68.0 70.3 60.9 51.2 51.6 52.7 75.0 73.4 75.8


VE ext:

55.1 62.9 68.0 60.9 51.6 52.7 75.0 76.6 78.9
57.0 71.9 79.7 57.8 32.0 32.8 85.5 78.5 79.7
62.1 78.1 85.2 72.7 56.6 62.1 88.3 81.3 82.8
70.7 87.5 93.0 92.6 86.3 88.7 96.1 88.7 89.5
73.8 90.6 95.3 94.9 96.1 96.5 97.7 90.6 93.0
73.0 91.0 93.8 84.8 85.9 87.9 89.1 90.6 93.4
70.3 76.6 78.5 82.4 85.9 86.7 87.9 90.6 92.2
65.2 70.7 75.0 77.3 78.5 81.3 83.2 84.4 85.5
60.5 65.6 70.3 72.7 75.0 78.1 78.9 79.7 80.5
60.5 65.6 70.3 72.7 75.0 78.1 78.9 79.7 80.5
60.5 65.6 70.3 72.7 75.0 78.1 78.9 79.7 80.5

INJ pw: 36.0

</PRE>

http://members.cisdi.com/~anesthes/7...-For-boost.bin

-- Joe

 

I think your overfueling the motor, and are into a state where you mistaking the great throttle response, as the motor being happy.

You have so much fuel, and so much timing, that the compression is artifically high from all the fuel, and you compensate with alot of timing. 46d timing and being in the 90s for VE at cruise, just doesn't compute for me. And you 58 bin had the same fueling.

Not to mention having enough fuel to run up to 80% TPS, before needing PE.

Not to mention that others have muffled the acoustic signature of the engine by running so much fuel, the K/S was deaf to the new sound.

Not trying to be critical, I just think you've missed the tune. I'd be watching things really close running like that.

 

Bruce,

My $8D tune is about the best i've had the car in 4 years. The only hard evidence I have that it is "close" is the fact that the blms and int are fairly level around 128.

Are you saying, if I drop timing, and I can fuel at cruise and still maintain 128?

I'm giving the car with the ECM seems to want. Otherwise it corrects itself anyway. I'd really cherish your input if you think I can do things much differently. Help me out.

Those 46.1d points in my timing table, I'm not sure i'm actually _hitting_ them. I'll look at my log, http://members.cisdi.com/~anesthes/7...s/8d-scan3.csv today and check.

I'm not really sure what to look out for. LIke I said, I got it close as possible to the point where the ECM doesn't complain. It thinks i'm stoich all the time.

-- Joe

 

128s aren't the end all, point of accuracy. You can play with just the timing, and effect O2s. After burning, when the charge still is burning after the exhaust closes, is another item that can fubar the meaningfulness of the 128s.

Now that you have a baseline, try backing the cruise timing back to say 34d, and then retune the VE table to 128s, and see what you have.

What K/Pa are you running at cruise?.

 

From the log, looking at the low to 0 tps areas, anything from 17 to 38kpa. It varies big time.

<PRE>

RPM MPH TPS SPARK KNOCK RET O2 BLM BPW AFR CLOOP MAP


1900 47 4.3 42.2 31 0 0 120 1.4 14.71 1 34.85
1875 46 5.1 43.2 31 0 0 120 1.46 14.71 1 35.56
1875 46 5.1 43.2 31 0 159 120 1.48 14.71 1 36.28
1900 46 5.9 43.6 31 0 601 120 1.5 14.71 1 36.99
1875 46 5.9 44.3 31 0 690 120 1.54 14.71 1 38.07
1900 46 5.9 44.3 31 0 716 120 1.54 14.71 1 38.42
1900 46 5.9 44.3 31 0 725 120 1.59 14.71 1 38.42
1900 46 5.9 44.6 31 0 747 120 1.53 14.71 1 38.07
1925 46 5.9 43.9 31 0 756 120 1.51 14.71 1 38.42
1875 47 5.9 44.3 31 0 751 120 1.54 14.71 1 38.07
1875 47 5.9 44.3 31 0 769 120 1.54 14.71 1 38.78
1900 46 5.9 43.9 31 0 769 120 1.48 14.71 1 38.07
1875 47 5.9 44.3 31 0 751 120 1.46 14.71 1 38.07
1900 47 5.1 43.2 31 0 734 120 1.42 14.71 1 37.35
1900 47 3.9 42.5 31 0 592 120 1.36 14.71 1 36.28
1875 47 3.1 42.2 31 0 433 120 1.17 14.71 1 33.78
1900 46 3.1 41.1 31 0 301 120 1.25 14.71 1 34.13
1875 46 3.1 41.5 31 0 35 120 1.28 14.71 1 33.42
1925 46 3.1 42.5 31 0 18 120 1.27 14.71 1 33.06
1875 47 3.1 40.4 31 0 18 120 1.28 14.71 1 33.06
1900 46 3.1 42.2 31 0 22 120 1.33 14.71 1 33.78
1900 47 3.1 40.8 31 0 31 120 1.27 14.71 1 32.7
1875 46 3.1 40.8 31 0 35 120 1.36 14.71 1 33.06
1875 46 3.1 41.8 31 0 57 120 1.34 14.71 1 32.7
1875 46 3.1 40.4 31 0 588 120 1.25 14.71 1 32.7
1850 46 3.1 40.4 31 0 720 120 1.34 14.71 1 33.06
1900 46 3.1 40.8 31 0 751 120 1.25 14.71 1 32.35
1875 46 3.1 40.1 31 0 765 120 1.28 14.71 1 32.7




2650 65 6.3 42.2 41 0 703 128 1.27 14.71 1 27.7
2625 65 6.3 42.9 41 0 632 128 1.19 14.71 1 28.06
2675 65 6.3 42.9 41 0 645 128 1.19 14.71 1 28.06
2650 65 6.3 42.9 41 0 738 128 1.21 14.71 1 27.7
2600 65 6.3 42.5 41 0 707 128 1.27 14.71 1 28.42
2650 65 6.3 42.5 41 0 579 128 1.19 14.71 1 27.7
2650 65 6.3 42.5 41 0 734 128 1.22 14.71 1 27.7
2625 65 6.3 42.9 41 0 756 128 1.27 14.71 1 28.06
2625 65 6.3 42.5 41 0 734 128 1.22 14.71 1 28.42
2625 65 6.3 42.5 41 0 703 128 1.21 14.71 1 28.06
2625 65 6.3 42.5 41 0 707 128 1.21 14.71 1 28.42
2600 64 6.3 43.2 41 0 362 128 1.27 14.71 1 28.42
2625 64 6.3 42.5 41 0 442 128 1.27 14.71 1 28.06
2575 64 6.3 42.5 41 0 203 128 1.25 14.71 1 28.77
2650 63 6.3 42.9 41 0 146 128 1.31 14.71 1 28.77


</PRE>

 

Bruce,

Curious. My motor's compression is 8.96:1.. Wouldn't more timing in the lower KPA areas get the motor to spool up faster to get into boost? N/A my motor is just slow. Car runs like mid/low 13s w/out the blower. At 3600lbs.

I also noticed, a side effect of porting the baseplate to match the heads, the runners, plenum, is that i'm boosting lower.

--Joe