Logs and map for your review...

benw · **Posted:** Sat Oct 11, 2008 3:45 pm

your second set of values looks a lot better. the TD04 is a poor performer at the boost levels you posted before. Not very good for longevity!

scotty_hall · **Joined:** Sun Oct 14, 2007 5:14 pm **Posts:** 27

Thanks... for the boost info...

Here is the latest update on my rom and log... What do I need to do with this to keep the timing from getting pulled? I want to keep the power band super smooth and It lacks a little bit @ the moment...

Thanks guys...

Code:

Time   (rpm)   Timing   IDC   IAT   KCA   MAF   WGDC   (AFR)   Load   IAM   PSI   tgt bst
0   1923   24.00   13.54   88   7.0   36.21   94.12   12.92   1.12   16   2.61   10.40
250   2014   26.00   14.61   88   9.0   38.98   93.33   12.76   1.16   16   3.19   11.80
500   2044   26.00   14.82   88   9.0   40.35   92.94   12.72   1.17   16   3.48   12.22
750   2125   26.00   15.76   88   9.0   42.53   92.16   12.91   1.20   16   3.92   13.38
1000   2188   26.00   16.40   88   9.0   44.64   91.76   12.66   1.22   16   4.35   14.29
1250   2251   26.00   17.29   88   9.0   47.13   91.37   12.94   1.25   16   4.79   15.18
1500   2326   26.00   18.36   88   9.0   50.13   90.59   12.69   1.29   16   5.22   16.26
1734   2418   26.00   20.12   88   9.0   53.90   89.80   12.67   1.33   16   5.80   17.40
2000   2488   25.50   21.72   88   9.0   57.81   89.41   12.82   1.39   16   6.24   17.79
2250   2559   25.00   23.47   88   9.0   62.06   88.63   12.48   1.46   16   6.96   18.29
2500   2622   23.50   25.17   88   9.0   68.09   88.24   12.29   1.53   16   7.98   18.52
2750   2730   22.00   28.54   88   9.0   76.95   87.45   12.17   1.65   16   9.29   19.18
3000   2830   19.50   33.21   88   9.0   88.25   87.06   12.14   1.81   16   11.03   19.88
3250   2957   16.50   41.00   88   9.0   101.95   87.06   11.79   2.02   16   13.35   21.54
3500   3029   14.00   47.71   86   9.0   115.47   87.06   11.45   2.26   16   15.82   22.12
3750   3174   11.00   56.20   86   9.0   134.65   87.06   10.95   2.50   16   19.30   22.12
4000   3316   11.00   58.71   86   9.0   139.31   87.06   11.13   2.52   16   21.04   22.12
4234   3461   11.00   61.28   86   9.0   145.30   87.06   11.26   2.51   16   20.89   22.12
4484   3597   11.00   63.01   86   9.0   154.30   87.06   11.23   2.52   16   20.89   22.12
4734   3726   11.00   65.97   86   9.0   158.18   87.06   11.17   2.52   16   20.60   22.12
4968   3864   11.50   66.77   86   9.0   160.73   87.06   11.48   2.48   16   20.02   22.12
5218   4028   11.50   70.45   86   9.0   164.33   86.67   11.27   2.46   16   20.02   22.01
5468   4160   12.50   71.60   86   9.0   171.10   84.71   11.05   2.43   16   20.02   21.50
5703   4223   13.00   72.97   86   8.5   171.78   83.92   11.39   2.42   16   19.73   21.25
5953   4383   13.00   75.74   86   8.5   177.93   81.96   11.26   2.41   16   19.30   20.63
6203   4584   13.00   77.83   86   8.5   186.18   79.61   11.48   2.41   16   19.44   19.97
6453   4615   13.50   79.75   86   8.5   186.55   78.43   11.20   2.40   16   19.30   19.61
6687   4765   14.00   80.30   86   8.5   189.47   76.47   11.45   2.39   16   19.01   19.03
6937   4924   14.00   81.94   86   8.5   191.66   74.90   11.41   2.36   16   18.86   18.66
7187   5023   10.50   83.65   86   4.5   193.12   72.94   11.39   2.34   16   18.72   18.16
7437   5119   11.00   85.36   86   4.5   199.45   68.63   11.55   2.32   16   18.28   17.62
7671   5237   11.50   86.48   86   4.5   201.40   66.67   11.50   2.30   16   17.70   17.13
7921   5364   11.50   88.12   86   4.5   204.14   63.53   11.48   2.31   16   17.27   17.04
8171   5435   12.00   88.12   88   4.5   204.53   60.78   11.32   2.26   16   16.69   16.38
8406   5483   13.00   87.46   88   4.5   202.19   60.39   11.35   2.23   16   16.40   15.88
8656   5601   13.00   88.42   88   4.5   204.53   59.61   11.32   2.19   16   15.67   15.72
8906   5708   14.00   87.67   88   4.5   203.75   59.61   11.27   2.14   16   15.38   15.41
9140   5809   14.00   89.23   88   4.5   208.44   59.61   11.19   2.13   16   14.80   14.87
9390   5882   15.00   89.09   88   4.5   206.88   59.61   11.05   2.09   16   14.51   14.62
9640   6024   15.50   88.67   88   4.5   202.19   59.61   11.05   2.07   16   14.36   14.44
9875   6063   15.50   88.74   88   3.5   205.32   59.61   11.13   2.04   16   14.07   14.15
10125   6193   15.50   89.47   88   3.5   205.70   58.43   11.02   2.01   16   13.78   13.83
10375   6219   18.00   90.21   88   3.5   211.56   58.04   11.01   2.00   16   13.35   13.75
10609   6302   19.00   90.08   88   3.5   208.05   56.86   11.04   1.97   16   13.49   13.52
10859   6372   19.00   90.46   88   3.5   206.09   55.69   11.08   1.95   16   13.35   13.32
11109   6454   19.50   90.88   88   3.5   208.44   55.29   11.08   1.93   16   13.06   13.23
11359   6550   19.50   90.83   88   3.5   207.27   53.33   11.08   1.90   16   13.06   12.80
11593   6643   20.00   89.28   88   3.5   204.14   52.55   11.01   1.88   16   12.77   12.67
11843   6732   20.50   91.92   88   3.5   210.39   50.59   11.13   1.88   16   12.48   12.24
12093   6690   21.00   89.92   88   3.5   207.66   49.80   10.82   1.84   16   12.48   12.12
12328   6849   21.50   90.59   88   3.5   206.49   47.45   10.86   1.82   16   12.33   11.89
12578   6824   21.50   90.26   88   3.5   206.49   46.27   10.98   1.81   16   12.33   11.93

benw · **Posted:** Sun Oct 12, 2008 4:52 am

do me a favor... set your advance multiplier to 12, and repeat the run. Tweaking the IAM is a good way to quickly shift the timing curve up and down, to find a happy spot if you're unsure.

soobaviator · **Posted:** Tue Oct 21, 2008 8:56 pm

OMG your ECU is seeing a lot of knock!

What kind of intercooler are you running? If it's the OEM WRX you are running too much boost and the IC can't cool the air down enough contributing to conditions that foster detonation...

With the kind of boost you are trying to run your AFR's need to be in the high tens and lower from max load to redline, especially with ethanol based 93 octane. Ethanol is not an "enhancement" It requires you to run slightly richer ratios due to a lower total energy content than straight gasoline and also because of the the leaning effect the faster vaporizing ethanol creates.

The idiots at the EPA mandated we put ethanol in our tanks in an effort to reduce CO2. I guess the fools did not realize that it would reduce power and fuel economy resulting in our cars having to use MORE fuel in total resulting in INCREASED CO2 output... Enough of the rant.

You have enough injector headroom to richen up to the required levels. Your timing is actually on the conservative side and with bit more fuel the knock should diminish. You should probably consider less peak/hold boost also. You are on the edge of the efficiency range on the 13T (60-65%) and manifold air temps would probably shock you. Pre-turbine exhaust pressures and temps are likely very high reducing VE and keeping more hot exhaust in the cylinder. This heats the incoming charge and boom you get lots of knock. The downside of the tiny hot side of the stock turbo.

-soobaviator

scotty_hall · **Joined:** Sun Oct 14, 2007 5:14 pm **Posts:** 27

What boost curve and fueling would you recommend?

coldturbo · **Joined:** Sat Apr 26, 2008 6:05 pm **Posts:** 2

scotty_hall, what is your mod list?
Do you have the stock boost solenoid or the GM unit?
Your max wastegate % is a bit different from soobaviator's tables. Is that from the smaller 13T turbo needing to work harder?
I like the tuning philosophy of these ROMs; the hard hitting early boost.
Fat, rich tunes with loads of boost and mild timing.
The 10% ethanol 94 of New England is tricky.
I was thinking of just modding, cleaning, and flow testing the stockers to give more head room. The little 440cc injectors get hammered with just Stage II.
Do either of you think the idea of lower timing early to raise the exhuast temps and put more heat energy into getting the turbo spinning at a lower RPM?
Sorry for all the questions. I have been comparing stage II ROMs all week to see what people like to tune for.

soobaviator · **Posted:** Wed Oct 22, 2008 11:47 am

Later timing and richer mixtures at the onset of boost will send still burning fuel into the exhaust tract keeping it hot and energetic, imparting more energy to spin the turbine. This is good for spool and response but not so good for fuel economy. It's also good for VE but there are balance points and transition from spool to peak/hold boost to consider.

For your setup if you are running the OEM WRX top mount I would target 19 psi as the peak boost from 3,000 rpm tapering to 17.5 psi at 5,000, then tapering to 10 or 11 psi at redline. This will give you a great boost of torque in the midrange. With more fuel, when the boost starts to taper you can make more power by bringing up the timing also. This will keep you out of knock trouble.

The absolute method of creating fueling headroom is bigger injectors. You can also replace the OEM FPR with and aftermarket unit. However I would suggest only a top quality unit to ensure a high degree of reliability. First test static fuel pressure with the OEM, install the new FPR, set the pressure, and adjust the injector scaling of your map accordingly.

I have attached a map I had worked on from an 05 EDM WRX. This map is designed for quick spool with razor sharp control using the OEM BCS, OEM Top mount, 440cc injectors and 13T. It may be a better baseline for you to start with. Fueling is conservative, timing is not so conservative so you will have to experiment carefully.

-soobaviator

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