Hi guys, my first post so apologies if its in the wrong section ( could be in about 5 different sections i suppose) but heres the problem:
Weve just started testing our 87 Track day E30 and I’m just a little disappointed with the power. As a 1987 Swiss car, it has a catalyst, which we have removed and fitted a lightweight s/s system from another wrecked trackday car. This Swiss specification gave only 185 PS, which I suspect came from the lean mixture fuel map necessary to keep the cat. alight. This setting may still be on the car.
My notes from 1987 are that the standard ECU had about 12 different maps hard wired into it, which could be selected by inserting a small plastic screwdriver into a hole adjacent to the main plug, and rotating it through a series of clicks to find the appropriate one. The setting on the M3 in 1987 was said to allow a richer mixture, and it moved the rev limiter hard cut up about 400 rpm to 7500. The notes indicate that a rolling road run then showed an indicative 210 bhp at the flywheel instead of the standard non-cat.UK spec. of 195. This map selection procedure was not a BMW Service instruction, and it used to be done by a guy we knew in BMW UK Parts, who got it from Motorsport in Munich, and we’ve long lost touch with him.
Anyone done this or got any advice?
Weve just started testing our 87 Track day E30 and I’m just a little disappointed with the power. As a 1987 Swiss car, it has a catalyst, which we have removed and fitted a lightweight s/s system from another wrecked trackday car. This Swiss specification gave only 185 PS, which I suspect came from the lean mixture fuel map necessary to keep the cat. alight. This setting may still be on the car.
My notes from 1987 are that the standard ECU had about 12 different maps hard wired into it, which could be selected by inserting a small plastic screwdriver into a hole adjacent to the main plug, and rotating it through a series of clicks to find the appropriate one. The setting on the M3 in 1987 was said to allow a richer mixture, and it moved the rev limiter hard cut up about 400 rpm to 7500. The notes indicate that a rolling road run then showed an indicative 210 bhp at the flywheel instead of the standard non-cat.UK spec. of 195. This map selection procedure was not a BMW Service instruction, and it used to be done by a guy we knew in BMW UK Parts, who got it from Motorsport in Munich, and we’ve long lost touch with him.
Anyone done this or got any advice?