ktm Posted November 1, 2007 Share Posted November 1, 2007 ....all on a Mustang dyno. I am PIG rich (average AFR 10.6), but I kept pinging at 4000-4200 at 12 to 12.5 AFR. I only spent two hours getting an initial tune, but now I am not pinging, AFR curve is flat, and I've identified a few issues I need to sort out (like wastegate puck cracking open). Still, I'll take the numbers. L28ET T03/04E 15 psi Supra 440cc injectors LS-1 coils on plugs Wolf EMS Quote Link to comment Share on other sites More sharing options...
1 fast z Posted November 1, 2007 Share Posted November 1, 2007 NA or turbo? Specs? Quote Link to comment Share on other sites More sharing options...
ktm Posted November 1, 2007 Author Share Posted November 1, 2007 Editted to include specs. Boost is 15 psi. Quote Link to comment Share on other sites More sharing options...
CamH Posted November 1, 2007 Share Posted November 1, 2007 Can we see a pic of the graph? Quote Link to comment Share on other sites More sharing options...
240hoke Posted November 1, 2007 Share Posted November 1, 2007 I think you've still got some work to go in your tuning, did you mess with the ignition curve much? When I rough tuned my car on the dyno (mustang) a while back she put down 254hp/289tq at 11psi. This was on a bone stock L28 long block with a to4b compressor housing with a 60-1 wheel. Im sure she had more in it as I did pretty much the same as you and set my fuel curve. If you don't already have one I would look into getting a wide band and some datalogging software (if your ems isn't capable of this). I ended up tuning fuel with a innovate Lm1 pretty much all the time, then you can go and fine tune your ign on the dyno. Quote Link to comment Share on other sites More sharing options...
ktm Posted November 1, 2007 Author Share Posted November 1, 2007 My EMS can do data logging and it can also support a wideband O2 sensor. I know there is more in the car, but like you said, I went for fuel only at this time. I will be constantly tuning her, but this is not bad for a first run. Quote Link to comment Share on other sites More sharing options...
Slow_Old_Car Posted November 1, 2007 Share Posted November 1, 2007 i gotta agree, alot more left on the table, i was putting out that power at 10psi, and 330hp/350tq on 15 with a slipping clutch. my motors 7:1 for whatever it matters on 440cc injectors. HY35 and MSnS via a ZXT dizzy. like others have said, can you post your dynocharts with a plotted AF curve and perhaps screens of your timing and fuel maps? Quote Link to comment Share on other sites More sharing options...
ktm Posted November 2, 2007 Author Share Posted November 2, 2007 I'll scan the maps tomorrow. I looked at the HY35 compressor map and it flows about 7+ lbs of air more than my T03/04E 50 trim. Also, are your numbers on a Mustang or Dynojet. Remember that mine are on a Mustang, which are typically 10 to 15% lower than a Dynojet. Making that adjustment, that puts me around 319 ft-lbs. Still, you can't compare dynos. I do not think I have all that much left on the table. My fueling can be optimized a little bit as can my timing, but I think I only have maybe 10 to 20 ft-lbs I am losing. It's my understanding through reading that AFR's only have a minor impact on power; it's timing that really matters. Since these runs, I have put a 50/50 blend of 100 octane and 91 octane to ward off detonation. Quote Link to comment Share on other sites More sharing options...
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