[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Plug gap, adaption, gasoline quality Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Bill Homer [Email] (#3427) [Profile/Gallery] (more from Bill Homer) on Thu, 27 Jan 2005 09:05:24 In Reply to: Base boost is 6.5 psi but max boost is only 13.5/14, aeroblues, Wed, 26 Jan 2005 21:15:27 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

First of all, I'm not sure what you are expecting for maximum boost, my understanding is that you will hit fuel cutoff at 15 - 16 psi. That said, I recently changed plugs, gapped them at 0.9mm and got noticably less boost than with the old plugs, which were worn to 1.1mm+ (past the range of my feeler gauges). Different cars seem to have different optimal settings for their plug gap, many posters say 1.0mm is ideal - I'll be there in a few months of wear, just in time for summer.

Because of the current winter conditions, I have yet to do an adaption run, i.e. wide open throttle from something like 1700 to 3000 rpm (?) going up a hill. Hills here in Illinois are typically found leading up to bridges, and as the signs say: "bridges freeze before road surfaces". I would imagine that the new plugs and different gap might provide different feedback to the trionic system, which is being interpreted incorrecly, needs to be reprogrammed.

If you are buying gas at one station you may want to see if a different source provides better results. One of the major chains here was recently fined by the state for selling lower-octane gas as premium - the majority of cars will not be affected by this, SAAB turbos will.

posted by 136.182.2...

• Base boost is 6.5 psi but max boost is only 13.5/14, aeroblues, Wed, 26 Jan 2005 21:15:27
  • Disconnect the connector on the BPC..., Street, Thu, 27 Jan 2005 12:32:16
    • Re: Disconnected the connector on the BPC...that is how, aeroblues, Thu, 27 Jan 2005 17:11:53
      • Did you drive hard the car with the connector..., Street, Fri, 28 Jan 2005 04:18:29
        • Yes I drove it hard and no change 13.5 psi max. n/m, aeroblues, Fri, 28 Jan 2005 13:14:19
          • Check condition of plugs..., Street, Sat, 29 Jan 2005 05:26:39
  • Seems to me things are working fine, with...., TKC, Thu, 27 Jan 2005 12:21:21
    • I was going with the specs I read here on this BB, aeroblues, Thu, 27 Jan 2005 17:16:17
  • aeroblues, how do you measure base boost? (n/m), Tarheel, Thu, 27 Jan 2005 10:04:28
    • I have a gauge that is plugged on the intake manifold, aeroblues, Thu, 27 Jan 2005 17:18:36
  • Plug gap, adaption, gasoline quality, Bill Homer , Thu, 27 Jan 2005 09:05:24 <-- Viewing This Message
    • 1.35 bar (19.6 psi) is fuel cutoff for Trionic. n/m, Street, Thu, 27 Jan 2005 13:47:10
      • Re: 1.35 bar (19.6 psi) is fuel cutoff for Trionic. n/m, matt 94 aero, Thu, 27 Jan 2005 14:56:42

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