ehretjs

When the car is sluggish, it feels almost like it's not shifting properly. I assumed it was brake related (holding it back a bit causing the engine to over-rev slightly) because it didn't start till I changed out the brakes. I wonder if it is something else and all this is just coincidental. There's no burning smell or rotor discoloration. Hope I didn't just replace the rear calipers when they didnt need to be replaced! lol

New here and was hoping maybe someone has run into this issue before. Just did front and rear brake job on my 2013 Legacy. Back brakes were pretty bad and just decided to do fronts along with them. Replaced both pads and rotors. Following that, it felt like the car was sluggish and being held back at times. Other times it would drive fine. During the sluggish times, the fuel consumption was horrible. A 5 mile drive would sometimes take 30 mi off the the time to empty estimate. After further inspection, fronts looked fine. On the rear, both caliper pistons were pitted and would both only compress in till about an 1/8 of an inch was sticking out. Replaced both rear calipers (haven't done hoses yet as they weren't in stock). Following caliper replacement, new rear pistons also will not compress fully (they actually stop at the same point as the old caliper pistons). I'm stumped. Either both hoses went bad at the same time, or there is something between the master cylinder and the rears that's preventing flow back to the cylinder. I've heard of the check valve occurrence, but that is usually in one of the hoses. Has anyone seen that happen between the master cylinder and the rear? Flow from the cylinder to the rears is fine (per what I witnessed during brake bleeding). History on this car is that I got it in December as a certified pre-owned. It has 55k on it. My theory is that the rear calipers probably haven't compressed fully since before I got it, but the pads were worn down enough that even with the piston compressed, they weren't causing a rub. Now with the new, thicker pads in place, I'm noticing the issue. Any ideas??