H&S Mini Maxx Installation Manual - Egr Unplug / Delete
58 Mini Maxx Installation Manual • www.hsperformance.com
2. The main urea harness is the large black harness located near the urea injector above the
urea tank. Flip the large gray locking tab to disconnect the harness.
For complete UREA System Removal instructions, visit
www.hsperformance.com/tech
Egr Unplug / Delete
If you are installing H&S DPF REMOVED tuning, you must unplug the EGR system on your
6.6L LML Duramax if not installing a complete EGR delete. Failing to do so may result in
erratic engine operation and loss of power. Please follow these instructions carefully to
unplug and disable the EGR system:
1. Unplug 3 EGR harnesses - two are brown with a yellow locking tab, one is black with a red
locking tab (see pictures for locations).
Speed limiter
This option allows for the removal of the factory speed limiter. Most 6.6L LML Duramax
trucks have a 98 MPH speed limiter from the factory. The limiter may be removed complete-
ly but WILL result in a loss of cruise control and exhaust brake function.
(this may change so be
2011 - 2012 6.6L LML Duramax Specific Features Continued >>