rfesu

are you totally sure it's related to boost and not RPM? are you talking about 'full boost' above 4000rpm (parallel turbo mode) or below (single turbo mode)? or both?

what you see is what you get. aftermarket gauges are an option a lot of people go for, especially with oil pressure. lots of space for aftermarket gauges in the dash below the stereo. when they design a car they have a limited amount of dash space, but also they don't want to distract the average driver so a lot of thought goes into which instruments you get how can you tell if your car is charging? same as any other car without a volt meter - throw a multimeter on the battery, 12.xx volts not running, 13.xx volts running. the battery light will definitely tell you it's not charging but it likely wont come on until your battery is dying as a result. oil pressure? if you have concerns, check/borrow/rent a mechanical oil pressure gauge. the stock warning light definitely wont come on until the situation is critical

i've found there are some error codes (unrelated to the transmission) that can be set that prevent it from going into gear once it's been shut off so you have to use the button. i'd assume their reasoning is if a critical system like braking or whatever can't be trusted it's not safe to drive. if you pop an ABS fuse on my car the exact same thing happens until you replace it. not saying that's what happened but since you drove through mud maybe you packed up a wheel sensor or something, and it panicked?

so it turns out that ecm codes can trigger a vdc fault. i had a knock sensor code. the ecm seems to trigger the vdc module into a failure state before it even sets its check engine light... interesting behaviour. i triggered a code 66 after replacing the sensor (missed a vacuum line) and it killed VDC again. could not get any codes from the vdc unit at all. i guess if we could reproduce that signal we could enable/disable this early vdc system at will although there could be a better way

i found a very interesting thing while installing my boost gauge last night on the right side of the dashboard there are three switches - fog light, headlight angle, and then a blank. the empty switch hole has a plug going to it. i did a bit of wire tracing and found that it has connections to the VDC box, and while probing it i accidently grounded something - it blew the ABS fuse. then i found this in the parts diagram.....image attached it appears to be the same switch type as the fog switch i wonder if maybe they intended to install a VDC switch there and decided not to

my car came with an aftermarket head unit with sloppy wiring, as well as the stock 'kenwood' minidisc unit (disconnected). when i got the car, i only got quiet sound from the tweeters in the door, nothing from the woofers. my first thought was that the head unit or its wiring was suspect, so i did a direct splice into the factory harness for a better deck i had laying around, and it made no difference, so i think the problem is in the doors, or the chassis wiring. i kind of find it weird that it would affect all four speakers at once if it was a problem in the door, though ?? there's no evidence of amplifiers or anything else having been installed, however i found antennas and wiring from a japanese navigation/tv system under the passenger seat, but no evidence that it would be directly connected to a speaker. i'm wondering if anyone can confirm, before i go through the trouble of ripping the doors apart or digging through more wiring, that any crossovers this car would have would just be a capacitor in the door itself? or any other ideas?

sometimes totally at random (cruising on the highway, cornering, whatever) VDC will kick in and odd things happen. sometimes it brakes, sometimes it cuts boost. sometimes it does this with no evidence, but sometimes it also lights the VDC OFF, and sometimes both VDC OFF and check engine, but both of these conditions clear themselves very quickly and things are back to normal. tires are brand new (problem seemed the same with the old tires) i don't have a scan tool that will read the VDC error codes yet, but hope to get one, not sure the best thing to use. i tried connecting the black wire but didn't get any codes. in the mean time, does anyone have any insight into what i could start looking at? it seems there's not a lot of documentation on this early VDC system