Grey wire mod MPG? +/-

I was currious if MPG was affected by this mod. I read all thirteen pages of the how to post. Just F.Y.I. if you are trying to do this mod you only need to read the first page. All of the other pages are just repeat questions with repeated answers. Save your self some time and only read the first page. The reason I am posting this thread is because I saw this mod done on a T.V> show called Trucks where they are working on an early model Tacoma and did this mod. They said that this mode tricks the computer into thinking it is in 4WD all of the time. I've only had the truck for about three weeks and would like to know if mileage is affected before I cut. I rrealy like the idea of having the locker available in 2WD. However, im primarily a street driver outside of hunting season. Thanks in advance for any info.

 

Exactly. No affect what so ever. Oh and Welcome!

 

having the locker engaged or not would not change mpg? i watched that episode too they never said anyhting about it effecting mpg? heck they smoked the tires off a boosted v6

 

The locker would NOT be engaged ALL the time... that would not only be more stress and friction, but dangerous try to turn at speed (because each tire must rotate differently when turning). Being off road, the friction (traction) is less than asphalt allowing the tires to slip.

The mod TRICKS the truck into thinking it is in L4, but it is in H2... 2WD. Lower mileage comes from running in 4WD.

The 2WD Off Road TRD Tacomas have a rear locker, that (naturally) works in H2... This mod just lets the 4WDs have the same feature (without being in L4)... that is to use the locker after pressing the button... part time, as needed.

 

Thanks for the quick replies. I just didn't know if the computer thought it was in 4WD if it would affect the MPG. Thanks again.

 

4WD uses more gas because there is more running gear bring turned by the engine, so more drag/ friction... and when off road, slippage. I don't think the ECU changes anything and if it could, why try and make a truck use more gas than it needs to?

The important thing is to enjoy the truck and the outdoors whenever you can!

 

oh really?

 

The ADD seperates one half of the differential from one of the front wheels, in essence making it free wheeling being an open differential. So, in 2WD you have 'half the differntial and a half axle rotating. The drive shaft and the other half of the front drive do not. Not as free as locking hubs unlocked, but it is the system that permits 'shift-on-the-fly' 4WD.