I have no experience with the Aero, but have had various experiences with turbocharged cars. The bottom line is that turbocharging can provide *most* of the beneifts of much larger displacement engines. Most, but not all.

The generic weakness of turbo engines is low-end grunt. All things being equal, a smaller engine will have smaller torque. The reason your launch improves by revving the engine and slipping the clutch is that you're getting the revs up to the point where the turbo is raising the amount of torque.

In recent years, Saab has done a wonderful job of improving the low-rev torque characteristics of its engines. But there are some problems that are just endemic to turbocharging. The only really good way to get the kind of performance you seem to want is to get a car that has a V-8. (That's what V-8s are for.) The Saab turbos do a wonderful job of producing big-engine performance from small engines... once the car is moving. But they will never provide the kind of smooth off-the-line power as a big engine. Even Saab can't change the laws of physics, and I think that's what you're up against here.

As for the engine continuing to rev after you take your foot off the pedal, that simply should not happen. Which makes me curious: is this a trait others have encountered, or is it just Doug's car?

• How to shift Aero 5-spd (long), Doug, Mon, 16 Jul 2001 15:35:28
  • Try to shift between 3200-3500 RPM in Town, Coolknight, Wed, 18 Jul 2001 07:07:59
    • Can you provide more info on the shift linkage? Thanks! n/m, Doug, Wed, 18 Jul 2001 11:48:57
      • I asked Hirsch-Performance about this, Coolknight, Thu, 19 Jul 2001 02:46:58
  • More info on audible vibration, Doug, Tue, 17 Jul 2001 14:37:40
    • No vibration from steering column BUT..., Bryce, Tue, 17 Jul 2001 15:07:17
      • Measures against rough idle, Coolknight, Thu, 19 Jul 2001 02:49:16
  • Same situation with Viggen?, Derek Gentry, Tue, 17 Jul 2001 12:17:24
    • Re: Same situation with Viggen?, Bob M, Tue, 17 Jul 2001 12:36:18
  • Re: How to shift Aero 5-spd (long), russdog, Mon, 16 Jul 2001 17:12:06 <-- Viewing This Message
    • Re: How to shift Aero 5-spd (long), Doug, Tue, 17 Jul 2001 14:27:00
      • Re: How to shift Aero 5-spd (long), russdog, Tue, 17 Jul 2001 22:57:10
  • My experiences, Bryce, Mon, 16 Jul 2001 16:50:32
    • Follow up on RPM's not dropping, Bryce, Tue, 17 Jul 2001 15:05:13
    • Our Aero shifting experience (and seat diatribe), David & Julie, Tue, 17 Jul 2001 10:39:14
      • Agree 100%....more, Manumad, Tue, 17 Jul 2001 13:15:03

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