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Forum: Hummer H3
04-16-2018, 11:06 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

https://cimg6.ibsrv.net/gimg/www.hummerforums.com-...

https://cimg6.ibsrv.net/gimg/www.hummerforums.com-vbulletin/450x312/80-file_php_2_file_67019_filename_7006325_old_thread_alert_d66db12aa328e3d670b38dd32f7f0bbd7918a9f7.jpg
Forum: Hummer H3
04-16-2018, 11:04 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

Yep... ...

Yep...

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Forum: Hummer H3
09-21-2007, 10:40 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

RE: Premium Gasoline?

I got no idea what I'm talkin bout, so I don't know how the rest of are gonna do it! :D Them were the days, yep.
Forum: Hummer H3
09-21-2007, 10:22 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

RE: Premium Gasoline?

Hey there bub, with the CB in the 60s. :D I had an old 70s Toronado with the CB radio built right in????? Weights and spring were and are a treat, I got old muscle doesn't know what a comuter is. I...
Forum: Hummer H3
09-21-2007, 10:05 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

RE: Premium Gasoline?

PCMs learn like this: Attention PCM students, class is in session, we have learning to do today! :D:D:D

Suffice it to say, when digesting octane, timing is based upon spark curves, not straight...
Forum: Hummer H3
09-20-2007, 01:40 PM
Replies: 37
Views: 25,019
Posted By Doc Olds

RE: Premium Gasoline?

The old 97-2003 Pontiac Grand Prix GTPs, the Buick Riviera, and the last generation of Impalas w/ the Eaton Superchargers..........all called for 89 or higher.;)
Forum: Hummer H3
09-20-2007, 11:39 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

RE: Premium Gasoline?

Audil: I'm not knocking (ooh that could be a pun :)) your observations, but they are based upon a twin turbo go cart controlled by a differentECM than an H3. I have run 93 in my 3 and my butt dyno...
Forum: Hummer H3
09-20-2007, 10:15 AM
Replies: 37
Views: 25,019
Posted By Doc Olds

RE: Premium Gasoline?

I'm no oil/gas guru man, but I agree with everybody :eek: ....................Uh.............sorta...? With a PCM or ECM controled engine, like in a 3, your computer can determine that your fuel...
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