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#1
10-14-2006, 02:14 AM
Hummer Authority
Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
Re: Hypertech Programming
Shift is firm or stock. Unless the newest models are changed.
Before supercharger I ran 93 octane setting with 87 octant fuel.
If You would like more info on My explination and past history experience do a search for TAZ and look for octane talk. May use a diffrent search and find the info I shared as is a little long but, I do not recommend it except for myself and why I justified it for Me.
TAZ
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05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
#2
10-14-2006, 02:19 AM
Hummer Guru
Join Date: Jan 2004
Posts: 7,060
Re: Hypertech Programming
you may experience "pinging" from your engine in running the hig octane setting using the lower octane fuel. i did on my 03. I did run what you have listed for the low octane settings and it ran great..esp after running the 37" tires.
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