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I don't believe those numbers.

TBTC rework done?

turbo compressor discharge silencer removed?

what fuel were you running?

it sounds like there are some restrictions somewhere

on a dyno, you don't have forward motion and the intercooler gets heat soaked and does not work well, on a dyno, get whatever they have for a fan blowing on the front of the vehicle, have the hood up and remove the grill for good measure.

I can't find my dyno stuff at the momment, but it was quite decent. I had the sports exhaust, mbc, tbtc and silencer done. The mbc was tapped into the center of the stock IC's integral return pipe, so it was after the pressure drop of the IC core. Thats a restrictive core, so now I think I know what the problem is. The MBC controlled boost above the IC, so at max power, the boost at the intake was getting lower and lower. So I feel that that is your weak spot.

The resonator is a straight through affair I assume, so the backpressure from it was probably very small. So you might have increased the sound of the exhaust, but it might still be as restrictive as stock. Note that Brad remove the muffler and left in the resonator. That worked quite well, I drove that setup. It had some strange trumpeting resonances that I did not care for. Brad was exploring what he could do for little cost, but putting in the aquamist was not inexpensive. It did pull very nicely. He had stock suspention and big tires, not too sticky. I found that when I threw insanely into a corner it made a horrible amount of tire noise. My setup and tires will handle just about anything that I throw at it.

So a MBC makes for a great steet driver, but it will not go all the way at the track or on a dyno with the basic pressure tap location. The best is at the TB, but that leads to more overshoots and fuel cuts. As you know I am working on that problem still.

posted by 65.68.100...

• Disappointing dyno numbers, Roger Wilco, Fri, 27 Sep 2002 19:12:39
  • Re: Disappointing dyno numbers, Dean, Sun, 29 Sep 2002 12:13:28 <-- Viewing This Message
    • Disappointing dyno numbers....... PART 2, Roger Wilco, Sun, 29 Sep 2002 16:38:11
      • Re: Disappointing dyno numbers....... PART 2, Jason Vehige, Wed, 2 Oct 2002 08:30:49
        • Re: Disappointing dyno numbers....... PART 2, Roger Wilco, Wed, 2 Oct 2002 16:21:43
      • dyno printout, Roger Wilco, Sun, 29 Sep 2002 21:16:23
        • Looks like a drastic torque drop above 3500RPM, AdamB , Sun, 29 Sep 2002 23:08:29
          • Re: Looks like a drastic torque drop above 3500RPM, sean, Mon, 30 Sep 2002 11:57:05
            • The drop looks steeper than normal..., AdamB , Mon, 30 Sep 2002 12:38:18
              • Re: The drop looks steeper than normal..., sean, Mon, 30 Sep 2002 13:20:15
                • Re: The drop looks steeper than normal..., Roger Wilco, Mon, 30 Sep 2002 15:04:34
                  • Roger, check your cam timing! Maybe off 1 tooth. n/m, TERRY, Mon, 30 Sep 2002 16:31:21
        • Re: dyno printout, sean, Sun, 29 Sep 2002 22:35:24
      • Re: Disappointing dyno numbers....... PART 2, kooch, Sun, 29 Sep 2002 16:57:41
        • Re: Disappointing dyno numbers....... PART 2, Roger Wilco, Sun, 29 Sep 2002 17:11:51
          • sorry, meant ignition timing....n/m, kooch, Mon, 30 Sep 2002 01:38:14
  • do a search for "1999 9-3 Dyno run, Brad, Sat, 28 Sep 2002 11:05:37
    • Here's the post, i found it, Sun, 29 Sep 2002 01:05:31
      • This post shows that drivetrain loss is exactly 14.4%, TERRY, Sun, 29 Sep 2002 23:22:15
        • Re: This post shows that drivetrain loss is exactly 14.4%, Brad, Sun, 29 Sep 2002 23:34:46
          • Re: This post shows that drivetrain loss is exactly 14.4%, TERRY, Sun, 29 Sep 2002 23:44:16
            • Re: This post shows that drivetrain loss is exactly 14.4%, Brad, Sun, 29 Sep 2002 23:50:33
    • Re: do a search for "1999 9-3 Dyno run, Roger Wilco, Sat, 28 Sep 2002 11:25:29
  • Re: Disappointing dyno numbers, kooch, Sat, 28 Sep 2002 00:31:58
    • Re: Disappointing dyno numbers, Roger Wilco, Sat, 28 Sep 2002 08:41:52
  • Re: Disappointing dyno numbers, sean, Fri, 27 Sep 2002 23:50:16
    • Sean what was your dyno numbers and results with Abbott, ckpaden, Sat, 28 Sep 2002 17:29:46
      • Re: Sean what was your dyno numbers and results with Abbott, sean, Sat, 28 Sep 2002 23:33:56
    • Re: Disappointing dyno numbers, Roger Wilco, Sat, 28 Sep 2002 08:08:45
  • Something's sure wrong..., Jeremy R., Fri, 27 Sep 2002 23:35:42
    • Err...... Why is that so incredibly low????, IronJoe, Sat, 28 Sep 2002 15:12:46
      • Re: Err...... Why is that so incredibly low????, Dave D, Sat, 28 Sep 2002 15:33:47
        • Thanks... now I feel dumb, tho., IronJoe, Sun, 29 Sep 2002 15:44:07
  • those numbers, my 2.1 900s has a chance to take ya :), Trev, Fri, 27 Sep 2002 23:05:43
  • Re: Disappointing dyno numbers, Roger Wilco, Fri, 27 Sep 2002 22:12:42
  • Yes I think having to modulate the pedal, AdamB , Fri, 27 Sep 2002 19:17:33
    • Re: Yes I think having to modulate the pedal, Roger Wilco, Fri, 27 Sep 2002 19:29:10

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