JAW FAQ
JAW version
1.02 Reader Dimensions?
LxWxH :9.9cm x 5.1cm x 2.8cm
JAW version 1.03 Reader Dimensions?
LxWxH :11.1cm x 5.15cm x 2.8cm
Digital Display Gauge Dimensions?
LxWxH :8.9cm x 2.5cm x 1.15 cm
Current draw?
1.5 Amps during initial heat-up and 1.25 Amps during normal operations.
How can I mount the display connector at the back so that
the install looks cleaner?
You will have to mount the 16 pin IDC connector to the back of the PCB on both
JAW and the display gauge; Reverse-Mount.jpg.
How can I test that my JAW unit is functioning correctly?
For deployment packages 1.08 and above there is a new document "JAW
Diagnostics.PDF" that shows you how to test your JAW unit. This document is
constantly evolving and it will in time hopefully grow to encompass solutions to
common problems.
How can I make the digital display gauge brighter?
R12 on the display board sets the amount of current that is feed into the LEDs,
the lower the value the more current gets feed into the display board. At the
default 2k/2.2k resistance, the lm7805 voltage regulator gets quite warm. I do
not recommend swapping a lower resistance for R12, however if you must swap
then, never let the R12 fall below 100 ohms.
Shipping FAQ:
How much is shipping?
Shipping is a flat rate of $10 USD anywhere in the
world
How do you ship?
Shipping within Canada is via Canada Post ground. For US and international
orders shipping is via Purolator ground.
How long does it take?
About 10 to 14 days.
Do you provide tracking?
For individual units no tracking number is provided. For group-guys I will ship
via UPS and there will be a tracking number.
Local pickup?
If you are in Toronto Canada you can do a local pickup and save on the shipping.
My address is: 1237 shaw street, Toronto Ontario, M6G3N9. Please email me "toalan@14point7.com"
or call me 416-858-3878, if you plan on doing local pickup.
Payment FAQ:
Other forms of payment?
Sorry only Paypal is accepted for now
Can I get a discount if I order more than 1 unit?
For group buys of 10 or more units, there will be a discount of $5 USD for units
without display and $7.50 USD discount on units with a display. Shipping will be
between $20-$30 for the entire order. Please email me "toalan@14point7.com"
for group buys.
Assembly FAQ:
How easy is it to solder the DIY kit?
A novice should be able to solder the kit together
What do I need to put together the DIY kit?
You will need the following; soldering iron, solder, Phillips screwdriver, some
kind of wrench or plier to crimp the wires to the contacts to make the wiring
harness. It is
also recommended that you have heatsink compound, but not absolutely required.
What watt soldering iron is recommended?
30 watts is recommended.
Datalogging FAQ:
Where do I tap the RPM signal from?
I recommend that you tap the line between your ecu and ignitor, on your ecu
harness. Other places might work as long as the signal is 0-5 volts frequency
dependent square wave. It does not matter which cylinders signal you tap.
RPM Conv, what is the right setting for my particular
engine?
I do not know what exactly is the proper setting for each engine configuration,
it depends on how many ignition pulse there are for each engine revolution for
the wire you tap into. A 4
cylinder engine with a distributor will have 2 ignition pulses per revolution, a
setting of "30" will work for that engine. A 4 cylinder engine with wasted spark
ignition will have 1 ignition pulse every engine revolution, a "60" will work
for that engine. Just experiment with the different values until you get
something that matches your tachometer, mostly likely the correct value is an
integer multiple of 15.
Other FAQ:
Can I make the analog outputs the same profile as PLX,
Innovate, etc...?
Some wideband readers have a built in voltage offset of about 1 volts positive
on its analog outputs, so if you set 1 volts output the actual output is shifted
upwards to about 2 volts. JAW does not have this voltage offset, so an entry of
1 volts means the actual output is 1 volts with respect to the ground signal
that JAW is hooked up to. To make JAW so that its analog output behaves
like other wideband readers, add the offset voltage to each voltage entry. I am
not sure exactly what the offset voltage for each brand of readers are, I
suspect that they are about 0.7 volts.
Where can I find sensor and cable parts in [insert country
here]?
The VW part numbers listed on this site should be universal, you should be able
to find the correct parts anywhere that sells VW parts using the same part
numbers listed on this site.