I've got a modified 89 740t with a Saab APC system on it. Anyways, been running like a top until today...played around with my overboost switch and APC, and decided to take the car for a test run, but had a decidedly odd occurance. I found a nice stretch of straight secluded road to test the car on, and powerbraked to 2200rpms at boost threshold. Took off, no wheelspin, a hint of bog and worked the aw71 through the 1,2,and D at 4500rpms. Overdrive was selected off, and the car pulled nicely up to around 15lbs boost and 100mph. Then all of a sudden, the ABS light came on and my speedo started to swing around wildly. The speedo went dead and the ABS light stayed lit the whole trip home. I did a few rolling take offs, and the oddness of the APC hit, where the car would try to hit 17-18psi (and fuel cut) when going WOT from a speed of 50mph around 2600rpms. Still, what happened to the speedo? And the ABS? Very cuirious problem. I also dented the shit out of the front fender backing down the driveway, but somehow, I don't think thats the cause. I"m going to go under the hood and see if its some burnt wires or something, and hopefully remedy the situation.