Date: Sun, 13 Jan 2002 14:35:40 GMT From: "Curt Brown" <cbrenopsami.com> Subject: Re: Saab turbo boost controller
Definitely 99 and earlier are easier to up the boost... "Johannes H Andersen" <johsnopsamanytime.co.uk> wrote in message news:1ec6845d.0201130058.2393c0f0nopsaming.google.com... > johsnopsamanytime.co.uk (Johannes H Andersen) wrote in message news:<1ec6845d.0201120529.52fc363dnopsaming.google.com>... > > "Curt Brown" <cbrenopsami.com> wrote in message news:<2zV%7.10876$Vq.77100nopsamnsc53>... > > > Manual boost controller, unit is like new, includes instructions, every psi > > > of boost extra is 7-10 HP, nice cheap mod, asking $75 shipped. > > > > Not such a good idea. If you override the dump valve, the system will > > switch off the fuel pump! > > > > Johannes > > Reply to Bob who wrote: > > "The trick is to adjust the boost controller so that the boost comes > up just below the level that triggers fuel cut. That way you maximize > the boost without causing run problems. In practice, you can only hit > fuel cut if you run wide open anyway. Properly adjusted, the boost > valve will give you much more boost more quickly, which is the real > advantage over the ECU controller which starts dumping boost > immediately in order to provide a smoother throttle curve. Response > is much better with a manual controller on 1999 and earlier models. > Results on the later (Trionic ?) controllers have been mixed. > > An ECU upgrade is better but costs $500 to $1000 USd. > > Bob" > > Hope you don't mind Bob, it appeared on my news server, but not on > groups.google . > > I prefer having the smooth throttle curve as long as I can access > full power when necessary. It is better than some Volvos that have a > sharp throttle action. The purpose of dumping boost early is to keep > the turbo spinning, thereby reducing turbo lag. I would imagine that the > device is difficult to adjust; fuel cut off is unpleasant and can take > you by surprise. Hope you don't take this the wrong way, I have a habit > of asking questions. Any turbo control system is quite delicate... > > Johnanes
 |
 |
 |
 |
 |
