having located a “mint” (in the words of the seller who was apparently overlooking the multiple cigarette burn holes that allowed me to negotiate the price down) set of 2011 Civic Si sedan seats, I intend to replace my TSX’s stock leather seats with some fabric.
Some sort of emblem update will be called for if I succeed
they fit! in so far as I was able to jenga them into the vehicle to drive them home
so where we stand project wise: I have the seats, and the dog approves of them (or is just intrigued by their bad smell)
No one has to my knowledge and internet searching done this before, and there is no indication that they will even be close to bolting in. The format of the front seats is similar, two vertical mounts on the front, and two horizontal mounts on the rear. For the rears the design is similar in that it has a base is separate from the upright, the uprights split in the same manner, and there are two side bolsters that bolt in separately. However, the TSX is Accord based, not Civic, despite them being similar sizes during this generation then internet (Acura TSX FB groups) feared the rear seats especially would not be the right width.
The rear seat sitting on top of the existing seat gives some good indication that things are at least going to be similar.
I do know that the seatbelt mounting for the driver’s side is different; the Civic’s seatbelt mounts to the seat, the TSX it mounts to the B-pillar. On the passenger side both mount to the seat.
I will be losing my seat heaters, although I could likely retrofit that in the future. The civic seats are also manual, so I lose the electric adjustment and the seat position memory feature.
But I do like a good mod, I prefer fabric over leather, and black with red stitching is a classic look.
Future Civic Si mods may include the transmission. The Civic Si 6-speed came with a factory LSD. Supposedly a common mod, as finding Civic transmissions is easier than TSX specific ones should the TSX one fail. But the internals of the Civic trans need to be swapped into the TSX’s trans’ case. Done before, so likely I’ll have some how-tos to follow at least.