Some of them. I was going to say all of them but actually some were made in 1989. All of them were made in 1989 and 1990.
The SuperChip i installed in my 1990 oldsmobile toronado trofeo gave it 25hp more according to the dyno.
the filter is located on the drivers side of the firewall just below the steering column
If you could bypass it easily it wouldn't be much of an anti-theft device now would it?
You can find a layout for the fuse panel of a 1990 Toronado Trofeo in the owner's manual. You can also find it at certain auto stores.
next to the oil filter
If you do not have an owner's manual for a 1990 Toronado Trofeo, you can find the fuse panel diagram at auto part stores. You can also find them in Chilton manuals.
Actually the flashers on a 91 Toronado are on the driver side and can be reached by taking off the panel below the dash and the flashers will be near the steering colum on the right side of the colum. Should be in the same place on a 1990.
oil pressure switch or knock sensor
I found it in my repair manual. It is about 26 to 32 psi.
Oldsmobile Silhouette was created in 1990.
diagram of firing order on a 1990 Oldsmobile cutless 3.3 engine