The ABS hydraulic unit is basically a big chunk of metal, weighing the car down.
The bracket that held the ABS unit also held the fuse box, but it was too heavy to leave in there, so the fuse box is now secured with a zip tie.
I took this opportunity to also replace the stock proportioning valve with an adjustable one. If you're not familiar, the proportioning valve determines how much braking power goes to the front vs. rear wheels. The stock proportioning valve has a fixed distribution of braking force, which is fine for a stock vehicle, but the moment you make significant changes to the car, that balance is probably no longer appropriate.
|Rear wheel speed sensor.|
Check out the quality hole Mazda drilled for the sensor wire.
The final piece to remove was the ABS control unit. Contrary to what the service manual says, the box is located behind the passenger seat, next to the engine control unit. It is important not to remove the wrong one.
Here's everything I removed, which weighed 19 lbs, 11 oz. (3.25 lbs of which was the wheel speed sensors--dreaded unsprung weight) I did have to install some new parts, so I will estimate the Weight Savings: 19 lbs.
I took the car for a test drive and confirmed the ABS is gone, confusing some pedestrians in the process. They couldn't figure out why someone was locking up the wheels for no apparent reason.
I also confirmed there are no leaks in the plumbing, which was a pleasant surprise (I will admit I discovered one leak while bleeding the system, but it was just a fitting I didn't fully tighten on the new tee). Now all I need to do is figure out the brake bias and I will be set. The only question is where to do that?