Date: Sat, 03 Oct 1998 14:32:19 -0700 From: Justin VanAbrahams <jvanabranopsamnet> Subject: Re: APC what do the pots do?
Keith Warnell wrote: > > In the turbo APC box are a number of potentiometers that can be > tweaked. Anyone know what each one does and how to adjust? > Over here in the UK some companies sell "tweaked" boxes giving much > greater output and torque without any addon other hardware. Someone > must know how they do this, surely its only an adjustment? > > A colleague reckons he's seen this posted somewhere but cant remember, > if someone can then there'll be a lot of happy turbo owners! > > Hopefull > Keith (89T16S) Ahhhhhh, the pots... my favorites. Most the tweaked boxes do actually involve a bit of work... Not hard work, mind you, but some understanding of what's going on in there. The easist thing to do is just screw with the pots, as you know... The: K - control knock sensitivity. Don't screw with it. P - control charging pressure. F - controls duration - how long the car stays on boost My personal, simple recommendation is turn the P pot 1/4 turn clockwise, and the F pot 1/8 turn clockwise. I can provide resistance values if you prefer. Um... If you already have an Aero or SPG or other higher horsepower edition (that is more than the 160 U.S. or 175 Europe) I suggest not messing with the F pot. Soon my web page will have a bunch more info on the APC box and other Saab tuning items, but I haven't gotten around to it yet... http://www.bfp.net/saabweb -Justin
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