Does the Matrix XRS has 180 or 170? I'm sure the corolla XRS has only 170 but they improve a lot in the low end and midrange... correct me if i'm wrong
this doesnt matter cause it's determined mostly by the ECU.
The Matrix XRS has the same 2ZZ-GE as the celica GTS. it's pretty much a direct swap. Also I think the fuel injection is the same. I'll try to verify this tomorrow just in case.
both cars even use the same motor mounts