60 Mini Maxx Installation Manual • www.hsperformance.com
Keyed ignition Source location
Although it is possible to manually power up the Mini Maxx without using a keyed ignition
source, it can sometimes create communication issues between the Mini Maxx and the
vehicles ECM. To eliminate these problems, we highly recommend tapping into a 12V keyed
ignition source to supply power to the Mini Maxx only when the key is in the ON position
and the vehicles ECM is online. Below you will find a commonly used 12V keyed ignition
source for your vehicle:
fUSE nUMBEr 45
Always tap into the
cold
side of the fuse. On the 2011 - 2012 6.6L LML Duramax, the
cold
side is towards the front of the vehicle.
nOTE:
If your fuse box or wiring looks different than those pictured
or if you are not getting 12V ignition power from the pictured source,
you may need to find another 12V keyed ignition source using a test
light or multimeter. If possible, find one that stays
hot
during engine
cranking.
Pyrometer (EgT) location
If you are installing an optional H&S pyrometer kit
on your 6.6L LML Duramax, you have the option of
installing it pre-turbo or post-turbo (or both if you purchased an additional thermocouple).
For the most accurate EGT readings, we recommend installing the pyrometer pre-turbo in
the passenger side exhaust manifold as seen below:
nOTE:
The passenger side exhaust manifold can be easily accessed with the fender liner removed. Be sure to drill
straight into the exhaust manifold otherwise the pyrometer probe may hit the manifold wall during installation.
For those wanting to install the pyrometer post-turbo,
we usually recommend doing so in the downpipe
which can also be easily accessed through the pas-
senger side wheel well as seen below:
GM Pre-Turbo Mount
2011 - 2012 6.6L LML Duramax Specific Features Continued >>
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