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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

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  #1  
Old 10-24-2007, 10:26 AM
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Default Re: This Just In... All 2008's must run PREMIUM!

It will take a little time but, a company will come out with a hand held that will get more HP and most likely use some octane. Some tuning software will come out later that you could tune on laptop but, since caddy has been running the engine some tuning is already out there.

I will say try 87 as I have always tuned my rigs to get all HP I could get with recommended higher octane and then run 87. It has more bang or power due to lower combustion properties in formualtion.

It is up to all to make on judgement as I'm just offering my experience and it is quite abit. I have a 1999 Silverado 5.3L tuned for max HP etc. and has run 87 from almost day one and never had ping etc. It has 185,000 miles and uses not a half pint of oil in 3000 miles (Penn 10W30) and runs like a scaulded dog. It has electric fans, tuning, and all the other stuff tranny adjusted etc. I'm going to check compression on the engine and if OK putting a Turbo on it next spring or summer. Have the biggest tires on it that will fit stock rims that came on it and it is hard not to spin them on any take off even from just a stop light. I will of course go to other rims and real wide tires to bite and still take it out with tool box on the back and just have fun shocking people as it does now.

My H2 after we complete upgrades in elctronics I'm going to tune it some more boost up supercharger some more and see when i will need to get off 87 at 6lbs. of boost now. No pings anything but, it shocks people seeing mouths open like catching flies. It will almost take wheel out of hands at launch from torque steer.

We are going to strip rig down next Feb. 08 and media blast it with baking soda and get the body as smooth as we can to get it to really step up in the big leaque shows we hope. May change paint scheme some and if anyone would look up pics in the forum area I would be interested in some PM mail contact with sincere suggestions.

I had once before thought about letting the forum really help me decide on custom ideas so it would compete some under Our Forum name etc. I'm proud to be a part of this so suggestion and list of forum as sponsor if we can get good paint idea or other ideas also. So jump in and if you want to send me email powerpoint designs or mail anything contact me privately. It will be done in late Jan. or early Feb. 2008.

I'm going to look at sending in pics etc. to the spring SEMA 2008 GM only design and skill contest. They take only 20 rides total of any year car, truck, or SUV anything. We were picked for spring 2006 but, as we loaded on trailer to take it to Indy, IN we had a failure of some product not of our fault so had to call and pull out so they could call in an alternate. Director said shame they had thrown the H2 out of the yes pile many times because H2 has been done in SEMA shows allot but, it had some really unique custom work they had not seen any other Hummers do so they put us in and he felt we would get Best of Show. I wish he had not told me that as you can imagine how my heart sunk to my stomach. Well he said no problem and i figured they would hate us forever but, at end of phone call he said try again as soon as we could get ready. I told him we will most likely start over taking 2 years for allot of suttle changes, he said still no problem let them know. He said it takes even more time on some cars.

So if Forum wants to involve itself any it will be taken seriously if given seriously. Ideas given and used will be added to list of sponsors on our show board with a few other individuals who gave ideas before from this forum.

Sorry to get into this as i know many do not care for bling but, believe me it wins allot of good will when we get to tell people about it and regular street Hummers always come up and we get to put out truths to counter all the lies. It just happened but, glad i did.

Try 87 at own risk. I did and loved it.

TAZ
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  #2  
Old 10-24-2007, 06:57 PM
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Default Re: This Just In... All 2008's must run PREMIUM!

Fuel is still available at .87 cents a gallon like in QATAR and to top it off its 97 octane! I wonder where its cheapest?
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  #3  
Old 10-24-2007, 07:00 PM
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Default Re: This Just In... All 2008's must run PREMIUM!

2000 miles in burning 87, no problems at all...no pings, no issues....
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  #4  
Old 10-24-2007, 07:09 PM
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Default Re: This Just In... All 2008's must run PREMIUM!

I agree. Was the engine in the 08 drastically changed from previous years? I've been running 87 in my 03 since day 1 with no issues.

Big question is - if you run 87 in an 08 and DO have issues, will your warranty still cover it?

Stacy
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  #5  
Old 10-25-2007, 01:04 AM
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Default Re: This Just In... All 2008's must run PREMIUM!

Quote:
Originally Posted by devilsfan
I agree. Was the engine in the 08 drastically changed from previous years? I've been running 87 in my 03 since day 1 with no issues.

Big question is - if you run 87 in an 08 and DO have issues, will your warranty still cover it?

Stacy

Yes, in the event you have an internal engine problem, the tech, or field rep would check the ECM history of knock detectors, and run a fuel quality test. I would make sure you had premium fuel in the tank in the event of a failure. I have seen warranty work declined for poor fuel quality!

Jimmy
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  #6  
Old 10-24-2007, 09:07 PM
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Default Re: This Just In... All 2008's must run PREMIUM!

Quote:
Originally Posted by Agriv8r
2000 miles in burning 87, no problems at all...no pings, no issues....

a tad over 1500 on my burning up the 87 octane and no pings or other issues. Maybe i'll dump in a load of hi-test and see how it runs....
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  #7  
Old 10-26-2007, 03:49 AM
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Default Re: This Just In... All 2008's must run PREMIUM!

after reading the instructions (owners manuel) it seems like gm has learned that we build or buy something first then read instructions later....checked the manual and sure as the sun comes up it says to run 91+ octane (premium fuel) did they "forget" to place this below the fuel gauge, or on the filler cap? I have owned several cars that required premium and all said it on the cluster. I drive a lot of miles and this will add up fast. Maybe this expains my consistant rough idle.
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  #8  
Old 10-26-2007, 06:22 PM
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Default Re: This Just In... All 2008's must run PREMIUM!

Quote:
Originally Posted by blackhawk29
after reading the instructions (owners manuel) it seems like gm has learned that we build or buy something first then read instructions later....


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