question about dsc and launching?

[axisboldaslove]

here is my question first can u launch with the dsc on in first gear to get traction and then turn it off in 2nd gear to get ur full power back?

i have a n2mb launch controller and i have it set at 2200 rpms and it builds up 1 psi of boost but with the dsc off its impossible to get traction. so i tried launching with my launch controller at 2200 rpms with the dsc on in first gear and i got traction and then i threw it into 2nd and hit the dsc off button and it illuminated off on my dash and it felt like it was off but towards the top of 2nd gear the traction control illuminated (the car with the tires swearving behind it) so this makes me think that u cant turn the dsc off completely at WOT in the beginning or in the middle of a gear....do u havf to be at a conplete stop to completely turn it off then

 

[axisboldaslove]

no body???

 

[MSMS3]

I don't know. DSC cuts in so abruptly that I don't think I could benefit from your experience.

The whole sequence of events from launch to completing the shift into second takes place in less than two seconds. It's that shift into second that is part of the generally crappy 60 foot times for many of us.

If I tried to mess with the DSC button and time its release just right while also dealing with clutch, tach, throttle and shifting, I'm afraid my 60 foot times would be worse, even if it would give me a bit better traction out of the hole.

But I'm interested in what your experiment turns up.

 

[bacarl]

Call me old fashioned, but I just leave DSC off and try to actually modulate the throttle to control traction.

If I had to guess, I'd say that the car must be stopped and/or your foot must be on the brake to disable DSC.

 

[HOBDisease]

IMO, you're losing precious time allowing TCS to play with your "tire spin" just ease the throttle and play with it and see what 60fts you can get.

 

[MSMS3]

IMO, you're losing precious time allowing TCS to play with your "tire spin" just ease the throttle and play with it and see what 60fts you can get.

I agree, but he's trying to run a "pedal to the floor" two stage launch controller. If he can figure it out, he's on to something. If I'm understanding him correctly, he's having horrendous wheelspin at 2200 rpm even with the two stage causing cylinders being deactivated and the thing snorting and popping, because it's still producing a small amount of boost.

Those things can work miracles on the drag strip if you can get them set up right. I don't see much chance of DSC being a part of the solution, but who knows. Necessity is the mother of invention.

I'm flying, I mean really building power up top, once I get going, but my 60 ft times really suck, so anybody that can find a way to get us down to 2.0 at 60 ft. or lower has my attention.

 

[HOBDisease]

Slicks. Problem solved.

 

[funksilver07]

Call me old fashioned, but I just leave DSC off and try to actually modulate the throttle to control traction.

If I had to guess, I'd say that the car must be stopped and/or your foot must be on the brake to disable DSC.

+1 old school works, just need to figure out how to launch (rpm's, throttle, clutch control, etc.) I turn off DSC at start up (so my TCS lights up too) and just drive. This car doesn't seem to have any problems getting itself off the line, at least for me. Once you get the correct mix you'll launch fine. To the question re: DSC off/on function wile driving, yes you can disable/enable on the fly but if your TCS light is on at start up that will go away and you'll just be turning off the DSC system by pressing the DSC button. There has been topics covering whether having DSC/TCS off at the same time does anything, I find it works for me... So if you do have the TCS light on and hit the DSC you will have to restart the car to get the TCS turned off (TCS light illuminated on dash.)

 

[Speed3Rookie]

ok...what's the difference between TCS and DSC?

 

[funksilver07]

Here, there's a bunch of pages to read but it gives both sides to this on going subject...http://www.mazdas247.com/forum/showthread.php?t=123686624

 

[Speed3Rookie]

Here, there's a bunch of pages to read but it gives both sides to this on going subject...http://www.mazdas247.com/forum/showthread.php?t=123686624

lol...just finished reading the thread.
Thanks for sharing.

 

[Nliiitend1]

TCS (Traction Control System) is just a component of DSC (Dynamic Stability Control).

...and holding the button down while starting isn't a way to turn the system any more completely "off" than by simply pressing the button when the car is already on...

 

[mr_mazda329]

TCS (Traction Control System) is just a component of DSC (Dynamic Stability Control).

...and holding the button down while starting isn't a way to turn the system any more completely "off" than by simply pressing the button when the car is already on...

I thought that did. I get tha car swerving light.

 

[MSMS3]

I wonder how the n2mb launch controller would work if the OP launched in second gear?

I've tried that as an experiment and got just about the same 60 ft. times as having to make the 1-2 shift right at the 60 ft. mark. With some boost going for him a second gear launch might actually work better. Just a thought.

Speed 3's with DOT drag radials are launching well at 3500 rpm. They might really shine with the a two step set up right.

 

[Nliiitend1]

I thought that did. I get tha car swerving light.

That light merely means you've put the intrument cluster into some sort of "fail mode" (for lack of a better term) by dicking with the buttons at a time when the ECU isn't prepared for it...

The enitire DSC system is disabled whether the TCS light illuminates (as it does by your "method") or not...

 

[axisboldaslove]

I wonder how the n2mb launch controller would work if the OP launched in second gear?

I've tried that as an experiment and got just about the same 60 ft. times as having to make the 1-2 shift right at the 60 ft. mark. With some boost going for him a second gear launch might actually work better. Just a thought.

Speed 3's with DOT drag radials are launching well at 3500 rpm. They might really shine with the a two step set up right.

i haven't thought about launching in second gear...maybe set the launch controller to 3,500 rpms and try it i dunno...i might try it out....

but for the most part i have an idea on how to launch with the launch controller and dsc off...slip the clutch and feather the throttle....lol easy as that

 

[MSMS3]

With your power, the second gear launch might work great with the controller. Heck, with my more modest mods, the damn thing lshamelessly ights up the stock tires with a second gear launch at anything more than 2500 rpm as it is.

But I agree that a little clutch slipping and gentle throttle might get you where you need to go. Let us know how it works out. If you can get your 60 ft's down below 2.0, I'll be a n2mb customer.

 

[funksilver07]

That light merely means you've put the intrument cluster into some sort of "fail mode" (for lack of a better term) by dicking with the buttons at a time when the ECU isn't prepared for it...

The enitire DSC system is disabled whether the TCS light illuminates (as it does by your "method") or not...

Possibly, but I've managed to get the TCS light to illuminate while the DSC is off, which leads me to believe that the DSC isn't completely disabled in this mode. I've seen boost numbers as well on my Dashhawk at 14+ psi i 1st and 2nd gear with both systems off (DSC & TCS light on) which shouldn't happen if the ECU has limited the boost levels in these gears. (huh) Not trying to start up the argument again just an observation in my specific vehicle... (burnout)

 

[axisboldaslove]

With your power, the second gear launch might work great with the controller. Heck, with my more modest mods, the damn thing lshamelessly ights up the stock tires with a second gear launch at anything more than 2500 rpm as it is.

But I agree that a little clutch slipping and gentle throttle might get you where you need to go. Let us know how it works out. If you can get your 60 ft's down below 2.0, I'll be a n2mb customer.

i am in need of a dashhawk for 60ft times...so 60 ft times will have to wait

 

[axisboldaslove]

Possibly, but I've managed to get the TCS light to illuminate while the DSC is off, which leads me to believe that the DSC isn't completely disabled in this mode. I've seen boost numbers as well on my Dashhawk at 14+ psi i 1st and 2nd gear with both systems off (DSC & TCS light on) which shouldn't happen if the ECU has limited the boost levels in these gears. (huh) Not trying to start up the argument again just an observation in my specific vehicle... (burnout)

+1