The following is a set of frequently asked
questions, click on the links below to take you directly to the
Q: How does it work?
A: As many of you know tirespin robs your car of
the ability to accelerate. This is that feeling you get when
you hit the gas, and you hear a lot noise from the tires, however
the vehicle doesn't really feel like it is actually accelerating
and pushing you back in the seat. Without going into the specific
details here is the gist of it: The TCS constantly is monitoring
the state of the vehicles tires. When no tirespin is detected,
which is the vast majority of the time, the traction control
allows you to have all of your power. Under normal driving conditions
you can not even tell the TCS is there, it feels exactly like
stock. However when it detects tirespin the TCS will reduce the
engine power output, depending upon the severity of the tirespin.
This reduction in engine power allows the tires to slow down
and better grip the road. When the tires are not excessively
spinning the vehicle will actually accelerate faster with less
power than it did when you had more power and were overwhelming
the tires. This comes from the fact that in Physics the coefficient
of static friction (tires not spinning) is higher than that of
kinetic (tires excessively spinning) friction. The more friction,
the more acceleration is available simple as that.
Q: What does the launch limiter (2-step) do? How do I use it?
A: The launch
limiter effectively works by giving you a temporary revlimiter
that is used to launch the vehicle effectively and consistently.
The launch limiter can be set at 100 RPM increments from 1500
to 6500. The limiter is a "soft-touch" style limiter
much like the stock limiter and the MSD limiter. You will feel
the limiter begin to activate a few hundred RPM before the set
point. The launch limiter typically can hold the RPMs at the
set point +-50 RPM. The limiter is automatically activated at
low speeds (the actual activation point depends on RPM set point).
All you need to do is be traveling at a low speed or stopped,
and attempt to "rev up" the engine. No special buttons
need to be installed or used, it is all automatic. At the track
the launch limiter can be particularly handy if you wish to build
boost at the launch. The launch limiter actually creates a small
load on the engine which will allow the turbo to spool even before
the car has launched.
Q: Who will this work for?
A: Essentially all SRT-4s from stock to highly modified.
The TCS system taps into the existing sensors on the vehicle,
which are available on all SRT-4s from 2003 to 2005. The system
has been tested on many vehicles from stock turbo, to S3, to
big turbo, with no issues. The only things that would render
the TCS system unusable on your vehicle are the following (and
they are all typically rare):
- It will not work on your vehicle if you have removed
your wheel speed sensors or your transmission speed sensor.
- It will not
work on your car if you have an ignition system which is completely
CDI (i.e. you have a full CDI system with no box that converts
from inductive to CDI). This is a VERY VERY VERY small handful
of SRT owners, if you don't even know what I am talking about
then don't worry it will work for you. However if you have a
CDI system on your car but don't know the exact specifics feel
free to contact us and we will help you determine if it will
work or not.
There is a special note for the 2003 owners. The 2003 SRT4 does
not come with a LSD (limited slip differential) from the factory.
Due to this fact it has been found that some of the time (not
all of the time) the 2003 vehicles will only spin one tire during
hard acceleration... even if the wheel is held perfectly straight.
Due to the fact that the TCS reads the transmission speed sensor,
which is connected only to one of the front passenger wheel,
it is possible that the TCS (as well as the vehicle PCM) does
not read the speed of the spinning wheel. If the TCS can not
read the tirespin, it can not help you. Much of the time the
TCS will still work because both tires are spinning, or that
the one tire attached to the transmission speed sensor spins.
However occasionally you will have times where the TCS feels
as though it is not working due to the fact that you are only
spinning the driver side wheel. In the future, if demand is high
enough, we may release an add-on box which will tap into both
front wheel speed sensors to allow the TCS system to always read
the tire (or tires) that is (are) spinning.
Q: Is this safe?
A: Certainly. Again, most of the time the system
is transparent and the vehicle operates exactly as it did stock.
Even when the system detects wheelspin and is reducing power
it is perfectly safe. We will say that you need to treat the
2-step with care, just as with any revlimiter. We do not recommend
that you stay activated on the revlimiter for more than just
a few seconds. This is the same with any revlimiter including
the stock revlimiter. Finally, we have found that cars will foul
out spark plugs faster with the TCS system installed if you use
the launch limiter (2-step) a lot. So you may need to replace
spark plugs at a shorter interval.
Top Q: Will I throw
check engine lights?
A: The only PCM that will throw a check engine light
is the stock PCM in a 2005. You may get a misfire or multiple
misfire code after a while of using the 2-step. These codes are
NOT performance inhibiting, but can be annoying. They can be
cleared by pulling the PCM fuse or battery power.
All 2003, 2004, and all stage computers (for all years) will
not throw a CE light.
Q: Will this modify the manufacturer warranty? Will this affect
emissions at all?
A: We group these two questions together because
the response is much the same. The basic answer is, this product,
like most other aftermarket performance products, is intended
for off-road use only. As for the manufacturer warranty question;
the answer to that question is at the discretion of the manufacturer
and the dealer. However, we will tell you that this product is
very very safe and if anything only reduces the power being run
through the drivetrain, so via the Magnuson-Moss Act it should
be nearly impossible for the manufacturer to find that the TCS
system caused a part to fail. In terms of the emissions question,
again it is intended for off-road use, however there should be
no harmful emissions effects due to the TCS, since during normal
driving conditions the system works exactly as stock and appears
transparent. Additionally, TCS can always be turned off, so if
you do need to take the vehicle in for emissions we recommend
simply turning the off the TCS. Finally, install can be done
in such a way that you can not even visually tell that the system
is in place, so a visual inspection should not be the cause for
Top Q: How difficult
is it to install?
A: The install is on the same difficulty level as
the install of many other aftermarket electronics such as an
MSD DIS, a piggyback fuel controller, etc. It should be performed
by a professional and typically takes around 2 hours to install.
The unit ships with a VERY detailed step-by-step installation
manual to aid in the installation.
Q: Is the unit "plug-and-play"?
A: This question is somewhat loaded. The TCS system
does not "plug" into the factory wiring harness. Some
cutting and tapping is required for installation. HOWEVER, once
installed it can be installed in such as way that if it needs
to be removed it is simply a matter of plugging and unplugging
a few disconnects. As for the "tuning" aspect of plug
and play: we would say yes, actually it is plug and play. The
unit will work extremely well right out of the box with no need
to "tune" anything. However you do have the ability
to tune the traction control settings, and we recommend you have
a laptop (or a friend with a laptop) to tune in the case that
you want a parameter changed. See "Can I tune the TCS?".
Q: Will this work with HOM?
A: We would never threaten your sweet sweet Mopar
HOM mode. Yes the TCS is HOM friendly.
Q: Can I tune the TCS?
A: Yes, the tuning software is provided at no extra
charge. The tuning software allows the TCS to be tuned via a
laptop, and is designed to be extremely user friendly and simple.
With the laptop you can see live sensor data, change the aggressiveness
of the TCS, modify the launch limit (2-step) activation RPM,
and wheel speed calibrations (not typically needed). In the case
that the EBC add-on is purchased the tuning software will allow
you to change the boost over vehicle speed. In the case that
the map switcher add-on is purchased you can control all of the
above parameters for both maps (Map 0 and Map 1). The tuning
software also allows for the unit to be flashed in the case that
a new software release is needed or an add-on is purchased. Once
the unit is "tuned" the settings are automatically
saved in the unit and the laptop is no longer needed, unless
more changes are desired. A serial cable (cable used to tune)
is included with each TCS system. However, many newer laptops
no longer have a standard DB9 serial port. If your computer does
not have a standard DB9 serial port a "USB to serial"
adapter can be purchased from your local best buy for only $30.
If you need one simply walk into the best buy and go to the computer
accessory department and ask for a "USB to serial cable".
Top Q: Will this
work at the track with slicks?
A: Yes. The best results honestly have been found
on street tires where traction is at a premium. However at the
track, when properly tuned the TCS has shown amazing results.
Typically track tuning includes increasing the launch limit RPM
and turning down the TCS sensitivity. When using the TCS at the
track on slicks 60' times have both decreased and become MUCH
more consistent. We recommend using the remote map switcher add-on
which allows you to easily turn off the TCS for the burn out
and turn it back on once burn out is complete. Otherwise the
burnout can also be achieved via the free tuner software and
can also be achieved with a special ignition key trick if no
laptop is available and you did not purchase the remote map switcher
Top Q: Will this
work with an MSD DIS?
A: Should work fine. The MSD DIS is actually a CDI
system (albeit not a very high end one). There would be no need
for both 2-step limiters so we suggest not using the MSD limiter
and only using the TCS limiter since it is much easier to use.
The only difference is that in the install with the MSD DIS,
the TCS system must be installed closer to the PCM side of the
wiring, and the MSD should be installed on the coil side of the
wiring. So the basic premise is:
PCM --> TCS --> MSD DIS --> Coil.
Q: Will it come with a way to turn it on and off if I don't own
The remote map switcher allows you to turn the TCS completely
off and on via a small external box. Additionally the remote
map switcher has an LED indicating >10% wheelspin, and also
allows you to switch between 2 different maps. So you can have
one map for example that has a low launch limit and a has TCS
as very aggressive. Then you can have another map that has a
high launch limit and has TCS as less aggressive (many times
you can use this map for the track).
Top Q: What mods
would go good with the TCS?
A: Basically anything. As for traction mods, I would
say get mounts. The mounts themselves don't help with traction,
however they do help alleviate wheelhop and for that reason I
say get them. Also stickier tires never hurt, the traction control
works well with a set of sticky tires. As for power mods, well
just about anything. Whenever traction is available the TCS will
allow your power mods to shine, when traction is limited it will
automatically pull back the extra power that your mods created
so that the extra power adders wont hurt.
Q: Will this make me get traction like my buddies EVO?
A: NO! The traction
control's sole purpose is to MAXIMIZE THE TRACTION THAT YOU HAVE
AVAILABLE. The traction control has been fittingly nicknamed
"the driver mod" by many... it levels the playing field
between drivers and makes a pedal happy driver in an SRT4 get
much more traction. The traction control does NOT negate the
need for other things that help with traction such as stickier
tires and motor mounts. In regards to the EVO, at the end of
the day your buddy with the EVO has 4 tires pushing his car along,
and you will have 2 tires that are pushing at maximum efficiency.
It will not make you grip like the EVO, but it will help narrow