hallo, late to the forum, but in case anyone could find it useful or ispirational, I had to custom build a roof rack frame for heavy duty cameracar work rigging. I designed the central supports to be plasma-cut from truck frame heavy steel. the...
That's the intake filter, it's there to keep debris out of the vacuum system. If the hissing continues while the brake pedal is pressed, then the diaphragm in the booster has split.
Whooshing would probably be pressured side of the turbo. Only takes a small hole. There is a weak point somewhere that I've seen mentioned on here, a elbow joint that might even be plastic
While a joint is ok, I'm not sure a reputable garage would use one. By the time the joint was made a complete pipe could be installed. A pain on axle stands to get in but probably easier on a ramp.
Depending on level of security a money tin might be ok.
Leaving out of sight isn't always best as anyone who has access to the car,eg mechanics, may find it and you possibly wouldnt know straight away.
There is the option for a second lighter for the rear passenger, the cable could be there under the cubby box. You can then easily fish cable where you want it, even inside the cubby box.
VCU is a good first check.
Although a cheaper check though harder check, I would prefer to do is the auto-adjuster on the drums at the back. the spring that holds them in the right place and allows them to work without adjusting to the max each...