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Date: Wed, 16 Jan 2002 04:13:03 GMT
From: Rick and Lorie Mieras <rlmierasnopsamsplanet.net>
Subject: Re: Saab turbo boost controller


AND.....what about the factory knock sensor, it will now do nothing? Risky. Bob wrote: > On Sat, 12 Jan 2002 18:21:10 GMT, Micah Donahue > <mkdonahuenopsamaone.netNOSPAM> wrote: > > >Would love to hear more re: the "mixed results." I've been weighing the cost > >of a Nordic ECU/FPR/exh/K&N route vs. a few extra HP without upgrading as > >many parts. > > > >Application would be my 97 900SETC. > > The mixed results are with the later (post 2000) vehicles. The ECU was > changed and from what I understand, it 'compensates' and reduces the > effect of manual control. > > You can get a manual boost controller for really short money and check > it out. Read here to learn about it: > http://pages.cthome.net/gus/mike.html > > Poke around the site for more info. You can build one of those boost > valves yourself with the instructions there or buy one from Dawes > Devices (linked at the bottom) or some other sources. > > Once you get it adjusted, it's a nice improvement. Turbo lag is > significantly reduced since the MBC only opens the dumper after > pressure is developed, not _as_ pressure is developed. The > downside is that the boost is fixed and as ambient temperatures > drop seasonally you will probably have to adjust the valve. Also, > as mentioned in the previous posts, if it overboosts then the > ECU will cut fuel, which is rather abrupt. > > If you buy an ECU upgrade, you maintain the stock arrangement. The > ECU will tell the computer to open the valve later, giving you the > same boost effect. But, since the computer is still in control, > it can adjust automatically to provide maximum boost in all > temps. Instead of hitting fuel cut, the computer will just adjust > the boost down and performance remains smooth. > > If you are thinking of either of these mods, you want to consider > doing a little clean up of the intake for better airflow. Also, you > make want to consider a sports exhaust for better flow out the > back. > > Bob

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