MyE28.com

Awesome..............simple awesome . It is raining and wet as hell here. I have it set for 0% slip for wet conditions. The car is fast as hell even though the engine is being cut to reduce slip.

Cant wait until it dries up, will be a blast. BTW, the car is MUCH safer in the rain with RLTC, no ass wanting to come around.

The problem was that I connected one of the wires to the wrong of the two wires from the ABS sensor. The manual said it did not matter, but it did. What's amazing is I got the connection correct 75% of the time with a 50/50 chance for each one.

Duke M535ti wrote: What is amazing is I got the connection correct 75% of the time with a 50/50 chance for each one.

I see Lotto in your immediate future

Sounds like a good system. I am curious just how tunable it is. Seems like it may work very well for you.

Now if you could just sync it with a radar detector to cut power and apply the brakes you'd have the perfect car.

Thass' gude. Now you can whup ass on Ford 500s. That's FORD 500s, not Mustang GT 500s. . . .

Congrats Duke!

This has to be wild. Duke, I demand a ride @ 'Fest!!!

UberDuke is his name

Duke, you've done well.

Good job, Duke! Now you can go back to beating 280Z's on the road.

shifty wrote:Good job, Duke! Now you can go back to beating 280Z's on the road.

Very cool. Congrats. I wonder if I could get MSII to do this.

altus22 wrote:Very cool. Congrats. I wonder if I could get MSII to do this.

TCD was talking about it and have the MSII control boost too. I am just not willing to wait on the R&D.

Duke,

Since you now have something similar to BMW's ATC, when are you doing to add a yaw sensor so you'll have DSC ??

Rich

Rich Euro M5 wrote:Duke,

Since you now have something similar to BMW's ATC, when are you doing to add a yaw sensor so you'll have DSC ??

Rich

Ohhhh, this is nothing like the Adaptive Transmission Control (ATC) .

The RLTC is similar if not that same as the system that is used in F1 cars. It only reduces the power to keep the wheels from spinning. Then again, I can select the TC to allow for just about as much spin as I want from 0% to above 20% (on the extended scale feature).
I mainly got the system for the launch control ability and full throttle shifting. The will take the LC advantage away from an E60 M5.

Do you mean Dynamic Traction Control (DTC) function.

The normal traction-control function not only applies the brakes of individual wheels as they start to slip, but also reduces engine power. This keeps the vehicle very stable, but under certain conditions (such as climbing a snow-covered hill) can leave little power to move forward. At low speeds and in gentle cornering maneuvers, DTC allows more wheel spin by de-activating engine intervention. As speed and/or cornering vigor increases, DTC progressively restores engine intervention.

I have read that the BMW DTC is crap and actually quite dangerous. Does it not severely reduce the power by shutting the throttle?

"Duke M535ti"

Rich Euro M5 wrote:Duke,

Since you now have something similar to BMW's ATC, when are you doing to add a yaw sensor so you'll have DSC ??

Rich

Ohhhh, this is nothing like the Adaptive Transmission Control (ATC) . ?

I actually meant DTC Dynamic Traction Control, I got the goofy acronyms mixed up with the Cooper S. The '03 E46 had DTC not ATC which the Cooper S has.

The RLTC is similar is not that same as the system that is used in F1 cars. It only reduces the power to keep the wheels from spinning. Then again, I can select the TC to allow for just about as much spin as I want from 0% to above 20% (on the extended scale feature).
I mainly go the system for the launch control ability and full throttle shifting. The will take the LC advantage away from an E60 M5.

Do you mean Dynamic Traction Control (DTC) function.

The normal traction-control function not only applies the brakes of individual wheels as they start to slip, but also reduces engine power. This keeps the vehicle very stable, but under certain conditions (such as climbing a snow-covered hill) can leave little power to move forward. At low speeds and in gentle cornering maneuvers, DTC allows more wheel spin by de-activating engine intervention. As speed and/or cornering vigor increases, DTC progressively restores engine intervention.

I have read that the BMW DTC is crap and actually quite dangerous. Does it not severely reduce the power by shutting the throttle?

Yup, it was DTC.

IMO, DTC is crap and can be dangerous because of the way it intercedes by abruptly pulling off the power when wheel spin is detected. Typically you experience this when pulling out from smaller roads/driveways etc onto another road with gravel or something else that reduces traction. The wheels spin a little and the DTC just shuts down the throttle. You have to learn not to pull out in tight situations that might induce wheelspin.

DSC "Dynamic Stability Control" is the other acronym I missed. It's a system (crutch in my book) that lets one drive beyond their true capabilities in marginal traction situations. For fun I would switch off this piece of technology, it transformed the behavior of the E46. It went from being relatively docile on slick surfaces to extremely entertaining. The typical new BMW owner who learned to drive in FWD cars should never touch this switch until they've attended a car control clinic.

Anyway, it sounds like your Race Logic system is sweet compared to the dismal technology BMW continues to develop for the masses. I'm looking forward to a demonstration at 5er Fest.

Rich

Man, I don't know if I could live without drifting in the rain...

Skeen wrote:Man, I don't know if I could live without drifting in the rain...

I enjoy it, but I enjoy it more in a smaller car (i.e. E30)

Skeen wrote:Man, I don't know if I could live without drifting in the rain...

Its easy. I just turn the knob and then press. This turns off the TC.

Off is OFF with this system. In fact I am going to disconnect the TC completely from the TEC3 wire harness for dyno runs. Just to be sure there is no interference.

Dry Conditions update.........................

Holy Shit.........car pulls like nothing, stupid fast. The only indication I get of the TC working is the engine (pop, pop, pop) when the injectors are being cut. The forward G-forces just don't quit. That is with 10% slip selected. Need much more playing around with different slip settings.

Tweek, tweek, tweek. With the RLTC, EBC and TEC3 it will NEVER be finished.

the BRAP-BRAP-BRAP sound of the RL is very satisfying. There's no perceived loss of acceleration - that system really lets you use up every ounce of the tire.

It's important to remember the only thing this will help you with is being ham-fisted with the throttle. It won't correct skids or do any of the other special stuff that a modern DSC system will do.

F1 drivers still spin

Went down to 6% slip today. The acceleration is seamless with the TC noise being the only indication.

I also worked with the Launch Control. I currently have it set at a soft cut at 4550 and a hard cut at 4800. So at a stand still the engine sits a 4800 rpm with full throttle. It just takes about two-three seconds for the boost to build to 10 psi or more (have not tried it on high boost). So, you can only imaging starting dead off the line with 10 psi of boost already built and then the TC limiting the spin as the clutch is released. It is kind of scary to be honest. Fast as shit to be blunt. Talk about a hole shot.

Don't worry, I'll be a pro by 5er Fest.

The launch control definitely sounds sweet. Can't wait to check this thing out.

The Shifty Fund may need to be the Duke Bail Fund so he can attend the fest.

Vance

I think a ride in Dukes car will be the make or break of 5fest! Nice work Sir.