FD3S Fuel Voltage Low, Resistor

[Sharingan 19]

Originally Posted by TitaniumTT

The FPR will take care of most of the difference as far as tuning goes.
Mazda doesn't always do the best job of economy. I have a friend of mine, we went out and street tuned his Rtek one night and he got something like 28mpg on the way up to canada. Now, granted this was an n/a but I never got close to that when I had a ecu.

Well, before all these fuel related problems and subsequent upgrades I got 17/25 like clockwork. I'm just trying to get back there, I'll tune the rtek when I get a chance and hopefully I can shoot for that 28mpg mark. At least now I don't have to get 13mpg while I wait.

Bottomline is, using the stock Rtek map is a weak excuse for wanting to keep a voltage reg. Lower voltage means higher amps, I'm not sure why Mazda did it that way, but I don't think it's needed, therefore it goes away.

"You" don't think its needed. "You" would also work 48 straight hours for the privilege of driving another 14.... "You" would also spend the time/$ to fine-tune the drivability portion of your map to near perfection. "I" don't possess the resources in $, skills, or patience to commit to doing that at this time. what "I" know is that of all the FC people (not running a stand alone.....and most who are) who have re-wired their fuel pump for constant 12v do not get acceptable fuel mileage for a daily driver. Lol.

First time I've heard of a pump burning out for no reason, there must be a reason...... could be low voltage caused by a bad voltage reg

:lmao: could be, I don't know anything about the FD voltage regulator....apples to oranges.

[TitaniumTT]

Originally Posted by Sharingan 19

"You" don't think its needed. "You" would also work 48 straight hours for the privilege of driving another 14.... "You" would also spend the time/$ to fine-tune the drivability portion of your map to near perfection. "I" don't possess the resources in $, skills, or patience to commit to doing that at this time. what "I" know is that of all the FC people (not running a stand alone.....and most who are) who have re-wired their fuel pump for constant 12v do not get acceptable fuel mileage for a daily driver. Lol.



:lmao: could be, I don't know anything about the FD voltage regulator....apples to oranges.

46 hours straight.... gonna try to break the 2 day mark this time around.

A voltage regulator is only slightly related to fuel mileage, the FPR compensates for most of it.

Think of it this way.... constant 13v+ is going to draw less amps and create less load/heat on the pump. That alone is reason enough for me. Tuning for fuel economy is pretty damn easy, just takes two people and a few hours cruising around.... or datalogging.