Please help ID this wire

[jcgranato]

an someone tell me what this wire goes to? It is on a 1985 Targa under the front drivers seat. Thanks. Joe

[timmy2]

To itself? It is a connector, looks like 2 wires plugged into it, one on each end. Probably a ground as Brown is ground in our cars.

[JJ 911SC]

Famous Brown DME wire. Unless you are in California (or Japan) and want to pass the smog test, it should be unplug and get 7 hp more.

From Steve Wong site:

For years there had been much speculation on why there was a difference in horsepower ratings between the early 84-86 catalyzed models, and the later 88-89 versions. With the 84-86 Carrera's rated at 207 DIN hp with a factory specified 0-60 time of 6.1 seconds and the 87-89 versions rated at 217 hp, some thought it was just the way Porsche rerated their engines. The reality is that half of the later 87-89 Carreras came with a chip with slightly more aggressive full throttle ignition timing, and the other half with actually less ignition timing. The full throttle fuel maps were mostly unchanged. Examining the chart below, we can see the 1267355358 chip had about 3-4 degrees more ignition advance above 5000 rpm, raising the peak horsepower to 217, while the 1267355357 was less aggressive. California and Japan cars jumpered the pin 10 brown wires by the DME reducing overall ignition timing by an additional 3 degrees in addition to further leaning part throttle fuel enrichment, lowering emissions further with a corresponding reduction in performance (California versions at 200 hp and 6.7 seconds).