In Reply to: Re: '98 CSE vs. Toyota Supra Twin Turbo (long), bryan [Profile/Gallery] , Sun, 19 Nov 2000 14:18:43

...instead of having two equally sized turbos the Supra has "sequential" turbo charging. The idea is that there is a small turbo to provide good low RPM power and quicker spool up and then there is a large turbo for when the throttle really goes down. It sounds like a pretty clever set up to me, and I'd bet the small turbo working much of the time really helps the efficiency of the engine too. From what I understand most twin turbo set ups are designed more to minimize turbo lag than to maximize power. One large turbo can make tons of boost (like early 911 Turbos) but two smaller turbos can make the same amount of boost with quicker spool up times. I guess Toyota took this idea one step further by using diferent sized turbos down stream of one another. Since Trionic came out Saab seems to be doing a great job of minimizing spool up time. The new 9-5s even have a clever feature built into their drive-by-wire system which gives more throttle than the driver asks for at low engine speeds and then eases up as boost builds to make the acceleration more linear. Neat stuff.

Craig

• '98 CSE vs. Toyota Supra Twin Turbo (long), zeke, Sun, 19 Nov 2000 11:09:13
  • Zeke- What is "TAQ"? n/m, John Rose, Mon, 20 Nov 2000 14:55:17
    • ECU software - Swedish style n/m, zeke, Mon, 20 Nov 2000 19:50:01
  • Sounds like you're on to something..., Karl , Mon, 20 Nov 2000 12:55:38
    • I'm not sure about the pipe, Karl....., zeke, Mon, 20 Nov 2000 19:47:07
      • No big difference..., Karl , Tue, 21 Nov 2000 07:10:45
    • Re: Sounds like you're on to something..., Mathias, Mon, 20 Nov 2000 13:54:56
      • Yup..., Karl , Mon, 20 Nov 2000 16:17:49
        • Re: Yup..., Mathias, Tue, 21 Nov 2000 03:08:13
          • OK., Karl , Tue, 21 Nov 2000 07:05:08
  • Know your opponent, study up...the Toyota..., TKC, Sun, 19 Nov 2000 22:43:40
  • Re: '98 CSE vs. Toyota Supra Twin Turbo (long), bryan , Sun, 19 Nov 2000 14:18:43
    • They're fast cars, and have an interesting turb set up..., Craig, Sun, 19 Nov 2000 16:08:54 <-- Viewing This Message
  • Re: '98 CSE vs. Toyota Supra Twin Turbo (long), sceagle, Sun, 19 Nov 2000 13:47:29
  • Re: '98 CSE vs. Toyota Supra Twin Turbo (long), Paul Davis, Sun, 19 Nov 2000 12:30:44
    • Hmmm......I imagine it's a bit lighter too...n/m, zeke, Sun, 19 Nov 2000 13:09:50
      • It's no matter , 2JZ VVTi produces 280 to 320 Bhp!, Maetha, Mon, 20 Nov 2000 00:59:45
        • Wasn't there a non T & Twin T version?, GM, Mon, 20 Nov 2000 12:33:21
          • Yes, there was a non-T and TT version for the last Supra..., TKC, Mon, 20 Nov 2000 15:10:33

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