Traction Control issues with Supercharger

Anyone else with the S/C have trouble getting traction on hard starts?

Seems like the traction control isn't even working. Especially when turning, the inside tire just squeals. It's bad when trying to shoot a gap onto a busy 40mph road.

Any tips?

 

Are you bragging?

Traction control on a Tacoma wasn't designed for racing starts to begin with.

 

Ha, don't hate, I'm being serious!

I have the locker - maybe stock locking diffs and limited slip diffs are mutually exclusive?

 

If you have the factory locker (Offroad model) then you do not have a limited slip

 

Locking Diffs are designed to prevent one wheel from spinning faster than the other by locking both ends of the axle together to force them to spin at the same rate.

Limited slip diffs (which is really a marketing term) are typically computer controlled. All it does is either reduce throttle or apply the brakes automatically.

They are mutually exclusive. Neither of these are the kind of traction control you are looking for.

In a sports car software is coded to apply traction control that allows you to maximize power with a limitation to unrestricted tire rotation (burn out). In a typical passenger vehicle/truck the traction control is software programmed to kill power so you don't slide into a ditch. It's a very different intent than you'd find in a Camaro, Corvette, Porsche, etc.

 

A great problem to have but use less of the right foot. The fancy term is throttle modulation- roll into the throttle instead of giving it all the beans at once- harder to break traction when once you got forward momentum. Around corners you get weight transfer which lightens up the traction on the inside wheel- then you get wheel spin and then you know the computer starts jumping in... Avoid accelerating in a slow sharp turn. If I need to jump into traffic from a side street, you "ease" through the turn then go full throttle instead of the slower method of going full throttle and then letting off to regain traction and back on the gas.

 

That's pretty much all the info I was searching for but didn't find before I posted. Thanks

 

That's what I've learned to do, applying those high school physics lessons about static vs kinetic friction. Gotta ease into it ... it's just hard to get used to.

 

Too much big powa bro! Lay off the big balls the truck has at take off and you'll net better results, and longer tire life. Imagine that.

 

But then it'll take longer to justify getting in to a set of T/A KO2s...

 

This is incorrect, partially at least. A limited slip diff is a mechanical feature no computer controlled. 05-08 trd sport models have a mechanical limited slip.

There are computer controlled versions of an lsd which later model year trucks have (09-15) but it is not really an lsd. It just used the brakes to slow the wheel that is spinning faster.

 

Exactly. Which is why I say that an LSD is a marketing term more than anything. Is it software driven? Is it mechanical? Both get sold under the same lingo - and neither are as good as a locker! lol

Heck, my LSD kept kicking in while I was off-roading yesterday on wet dirt trails. I kept hearing the electronic noise it makes and never could understand why the heck it kept turning on (my traction/footing felt perfect). I hit the button to turn it off... When you're in 4x4 LO doing 20mph or less you don't want the computer reducing momentum.

 

It's not a marketing term and lsd is a mechanical partially locking differential. It has special planetary gears with clutches in the diff that allow it to do so.

The computer brake controlling stuff is not an lsd and is not marketed as such. It is marketed as "Trac and a-trac"

 

Ehh. They are noisy as crap and they aren't as capable as their MT counterparts are, though they make just as much noise. Look at a different set of AT's. Cooper has an extensive lineup and the majority of their AT's are much quieter in comparison.

 

Sounds like someone has some autocross, performance driving school or HPDE experience?

 

Exactly. Limited Slip Diffs were available on muscle cars back in the 60s. GM called their version Positraction.

For scientific proof I offer the cinematic masterpiece, My Cousin Vinny. To whit, an excerpt from the wikipedia page on "Limited Slip Differential":

'In the 1992 film My Cousin Vinny, the proof of innocence of two young men falsely accused of murder relies heavily on a photograph of tire marks made by a car which has positraction, which (as Marisa Tomei's character famously declares in an Oscar-winning performance) "was not available on the '64 Buick Skylark," the car driven by the defendents. She argues that the evidence proves, rather, that the getaway car was a 1963 Pontiac Tempest, which did have positraction.'​

If the '63 Tempest needed a computer to work it's positraction, how big do you suppose that muther-humper woulda had to have been?

 

How about two out of three?

 

Had the chance to do all 3, all in the same vehicle, a modestly prepped street car, over a 12 year period.

I will say this. All of them, done with forethought and a good set of instructors, will absolutely make you a better/safer driver on the street. Regardless of what you are shoeing.

I will also say that doing your own wrenching on suspension and safety systems, on a vehicle you are going to flog, will either make you a more attentive mechanic or a potential ER case.

 

I do sometimes wish for a true posi like a Truetrac I've put in the last few trucks rather than the electronic traction control. But it would eliminate the locker.

 

4 cyl (389 cut in half, or ~ 3.25l ) 4 bbl, solid motor mounts, rigid torque tube with flex drive shaft, rear transaxle, 50/50 weight ratio.

Innovative for it's day. But I don't recall posi-traction being part of the transaxle. Could have been. I was just a kid.

I do recall the drum brakes getting pretty heat soaked running the mountains around Gatlinburg. At least that's what dad told mom the reason was he was going around corners faster for. To save the brakes.