Curious...AWD converted to RWD.

[Revvdmedia]

Am I the only one that finds it amusing that KIA has a section about using a dynamometer in the owner's manual? I get it, the car isn't slow, but that just seems unexpected to me lol.

 

[Callum]

Am I the only one that finds it amusing that KIA has a section about using a dynamometer in the owner's manual? I get it, the car isn't slow, but that just seems unexpected to me lol.

Emissions testing...it has to be in there.

and...you know...incase the typical Kia owners wants to RIP IT on a dyno

 

[MerlintheMad]

I am going to revisit this, studying document after document this is something that KMA (Kia Motors America) refuses to publish other than subtle hints about making this car RWD.

I've looked at the AWD system and how the canbus communicates with the AWD system. This fuse in only live, under 60KPH. The entire front end of this car, is turned off and we do indeed have 200lbs or hurling axles, and a front diff just spinning and not doing anything, this is the main reason why we have no CEL. or error codes on the dash. Zero power to the front end over 60MPH. By removing this fuse, in theory the car decouples the clutch and there is ZERO chance of it engaging. I would like to put this car on rollers and a multmeter showing when power is applied to this circuit and study it a bit more. Seems like a simply fuse tap/relay switch to convert AWD to RWD.

Why? I am going to put a LSD (Limited Slip Differential) in mine, and one day have the ability to go RWD at the track.

This is just crazy talk! Are you saying that above 60 MPH (KPH, which is it?) there is no AWD going? That AWD tracked cars are toting c. 200 lbs of useless weight through the corners? That the "electronically monitored suspension" is functioning without AWD? I don't pretend to know a damned thing. But unless a couple more "sources" chime in here, agreeing with you, I'm going to assume my cap of morbid skepticism and believe that you are mistaken on this one.

 

[Roarbomb]

This is just crazy talk! Are you saying that above 60 MPH (KPH, which is it?) there is no AWD going? That AWD tracked cars are toting c. 200 lbs of useless weight through the corners? That the "electronically monitored suspension" is functioning without AWD? I don't pretend to know a damned thing. But unless a couple more "sources" chime in here, agreeing with you, I'm going to assume my cap of morbid skepticism and believe that you are mistaken on this one.

Right, feels very decitful?

 

[Callum]

This is just crazy talk! Are you saying that above 60 MPH (KPH, which is it?) there is no AWD going? That AWD tracked cars are toting c. 200 lbs of useless weight through the corners? That the "electronically monitored suspension" is functioning without AWD? I don't pretend to know a damned thing. But unless a couple more "sources" chime in here, agreeing with you, I'm going to assume my cap of morbid skepticism and believe that you are mistaken on this one.

Haha, the Stinger AWD is very much like the Attesa AWD Systen. It can decouple and become 100% RWD, though coding/electronics, and mechanical.

Pulling the fuse, disabled to clutch packs, but the TCU still stays online. The system can power the AWD ECU down when it’s not in use to maximize fuel consumption, etc. pulling the fuse apparently does not throw a code, and the Stinger can revert to a 100% RWD biased chassis.

When the AWD is on the track, the AWD ECU is online and working only since it sees demand for traction and torque vectoring. We have all seen the RWD variants on the track drifting. AWD is there to prevent that, highway use the AWD is indeed 200lbs of garbage rolling around. Disable that system, you have a RWD Stinger all the time.

 

[Callum]

I just did a little office cul de sac testing.

Vehicle Off, doors closed, hood open waited one minute. Removed 20AMP "4WD" Fuse. Started vehicle and sat for 5 minutes prior to moving, shifted to Drive and drive slowly, and I mean slowly for a quarter mile. Zero lights, wasn't really sure it disabled anything.

I decided whatever, punched it and jeeeeez. 100% RWD, zero lights, power steering working. It was truly a RWD setup. Even laid down a little rubber. I will continue to make small trips to and from the office on back roads to see if the ECU/TCU catches anything and report back. I will know resume my search for a LSD, since the open diff is a bit sketch lol

 

[MekstingerGT]

Keep us posted. What I really want to know is how easy is it to go sideways(drift)? lol.

I just did a little office cul de sac testing.

Vehicle Off, doors closed, hood open waited one minute. Removed 20AMP "4WD" Fuse. Started vehicle and sat for 5 minutes prior to moving, shifted to Drive and drive slowly, and I mean slowly for a quarter mile. Zero lights, wasn't really sure it disabled anything.

I decided whatever, punched it and jeeeeez. 100% RWD, zero lights, power steering working. It was truly a RWD setup. Even laid down a little rubber. I will continue to make small trips to and from the office on back roads to see if the ECU/TCU catches anything and report back. I will know resume my search for a LSD (Limited Slip Differential), since the open diff is a bit sketch lol

 

[Revvdmedia]

Maybe I'm misunderstanding basic electrical theory, but would a missing fuse not be the same as a blown fuse (break in continuity of the circuit)? Unless the fuse box detects whether a fuse is inserted or not, wouldn't a blown fuse create this RWD situation and not trip any dummy lights? Seems potentially hazardous in my opinion.

 

[Callum]

Maybe I'm misunderstanding basic electrical theory, but would a missing fuse not be the same as a blown fuse (break in continuity of the circuit)? Unless the fuse box detects whether a fuse is inserted or not, wouldn't a blown fuse create this RWD situation and not trip any dummy lights? Seems potentially hazardous in my opinion.

If you remove the fuse with the engine on, it will throw codes (from what I read on other forums). If the engine is off, and the computer is asleep it does not detect any errors.

I suspect removing the fuse with the computers off allows the car to be driven in some sort of "diag" or "dyno" mode (similar to the older W211 E55 Dyno Mode).

 

[Brian B]

Wow this is fascinating.
Outside the engineering dyno mode and towing applications, I see no practical purpose other then snow donuts in a parking lot this Christmas if it snows lol ! Yes you can you can do large arc circle drifting in the snow with awd (Because i have enjoyed that with the car already) but its really fun to know that its possible to turn the Stinger into pure (sandbagged) rwd for screwing around in a safe area. I don't think I would ever do this out on the road though.

 

[Callum]

I am going to slowly increase trip distance, and see "what is what", give me a few weeks so I can gather a little more data. I will go by the dealership and have them "scan" the computer. I'd like to see if the car keeps a log when the system is offline.

 

[MekstingerGT]

Speaking of dyno testing, I wonder if anyone has dyno'd an awd with the fuse out. I would think it was be more since 200lb is not connected.

 

[Callum]

Speaking of dyno testing, I wonder if anyone has dyno'd an awd with the fuse out. I would think it was be more since 200lb is not connected.

I can do a butt dyno tonight for you

 

[MekstingerGT]

Doooo it!

 

[Revvdmedia]

Speaking of dyno testing, I wonder if anyone has dyno'd an awd with the fuse out. I would think it was be more since 200lb is not connected.

I think it would still be a little less than RWD because even though the AWD is disengaged, there will likely be losses in the transfer case that the driveshaft is still attached to.

 

[Callum]

Let me begin with tire smoke and end at a Costco tire center

 

[MekstingerGT]

Did this today for the first time! Put the car to sleep and pulled the fuse. Off the line it does feel slower maybe cause I didnt rump on it. Peeling out is super easy now. Someone need come out with a switch to disable it on the fly.

 

[Callum]

Confirmed.

45 miles with no fuse. Every function from smart cruise, ABS, and auto start stop remains functional. Seems like all we need is a LSD and we have best of both worlds.

 

[MerlintheMad]

Confirmed.

45 miles with no fuse. Every function from smart cruise, ABS, and auto start stop remains functional. Seems like all we need is a LSD (Limited Slip Differential) and we have best of both worlds.

And you are 200 lbs overweight.

 

[Callum]

Are you are 200 lbs overweight.

I’m not sure what you getting at, other than your constant posts that aren’t contributing to anything other than fluffing up your post count with useless comments.