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> 93 octane in Denver?
35th_Anniversary...
post Dec 13 2005, 04:07 AM
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seems like stupid question, but Topeka sure as heck didn't have any 93.
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35th_Anniversary...
post Dec 14 2005, 11:39 PM
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QUOTE (00 SS @ Dec 14 2005, 16:39)
Correct, but if the knock sensors are causing your timing to be retarded, you're loosing power.  You would need a scan tool to know if you have knock retard or not.

Agreed, but my concern is more about GM's warranty, not the small amount of HP loss due to retarded timing. The retarded timing is probably the cause of the misnomer that premium fuel has more power than regular.

Some interesting info here: http://www.faqs.org/faqs/autos/gasoline-faq/part3/

However it does not address knock sensors, atmospheric perssures, etc. but does offer some good information on gasoline.

This post has been edited by 35th_Anniversary_AS_Camaro_SS: Dec 15 2005, 12:02 AM
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35th_Anniversary_AS_Camaro_SS   93 octane in Denver?   Dec 13 2005, 04:07 AM
Rob Hood   I didn't think they had that high of octane at...   Dec 13 2005, 06:00 AM
Sam Strano   Lat time I was there 91 was it because of the alti...   Dec 13 2005, 06:02 PM
trackbird   Thinner air reduces the filling of the cylinders, ...   Dec 13 2005, 06:16 PM
35th_Anniversary_AS_Camaro_SS   Yeah, but with a "mass" airflow sensor d...   Dec 13 2005, 10:59 PM
trackbird   QUOTE (35th_Anniversary_AS_Camaro_SS @ Dec 13...   Dec 13 2005, 11:22 PM
35th_Anniversary_AS_Camaro_SS   the lower compression ratio is really a misnomer. ...   Dec 14 2005, 01:42 AM
trackbird   Right. We are actually discussing dynamic compress...   Dec 14 2005, 03:22 AM
00 SS   I've never gone through all the thermochemistr...   Dec 14 2005, 04:26 PM
trackbird   QUOTE (00 SS @ Dec 14 2005, 11:26)Maybe you g...   Dec 14 2005, 05:41 PM
00 SS   Interesting. I thought the vapor pressure determi...   Dec 14 2005, 06:11 PM
trackbird   QUOTE (00 SS @ Dec 14 2005, 13:11)Interesting...   Dec 14 2005, 06:54 PM
00 SS   QUOTE (Rob Hood @ Dec 13 2005, 00:00)I didn...   Dec 14 2005, 08:29 PM
trackbird   QUOTE (00 SS @ Dec 14 2005, 15:29)The bottom ...   Dec 14 2005, 08:59 PM
35th_Anniversary_AS_Camaro_SS   I'll run whatever Danny Popp says is okay.... ...   Dec 14 2005, 10:31 PM
00 SS   QUOTE (35th_Anniversary_AS_Camaro_SS @ Dec 14...   Dec 14 2005, 10:39 PM
Spectator   I thought higher octane fuel actually had slightly...   Dec 14 2005, 11:09 PM
pknowles   QUOTE How often you you ever get knocking in moder...   Dec 14 2005, 11:13 PM
pknowles   QUOTE I thought higher octane fuel actually had sl...   Dec 14 2005, 11:17 PM
Spectator   I understand that. I'm talking about the actua...   Dec 14 2005, 11:23 PM
35th_Anniversary_AS_Camaro_SS   QUOTE (00 SS @ Dec 14 2005, 16:39)Correct, bu...   Dec 14 2005, 11:39 PM
CMC#5   hehe so then why is the max octane in Ca 91 not 93...   Dec 16 2005, 04:57 AM
trackbird   QUOTE (CMC#5 @ Dec 15 2005, 23:57)hehe so the...   Dec 16 2005, 05:31 AM
35th_Anniversary_AS_Camaro_SS   I was thinking it could be something about emissio...   Dec 16 2005, 06:09 AM
trackbird   QUOTE (35th_Anniversary_AS_Camaro_SS @ Dec 16...   Dec 16 2005, 01:21 PM
CMC#5   So you think the CARB (Cal Air Resource Board) is ...   Dec 16 2005, 10:10 PM
trackbird   QUOTE (CMC#5 @ Dec 16 2005, 17:10)So you thin...   Dec 16 2005, 11:12 PM

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