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BMW 3-Series (E90 E92) Forum
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91 Shell or 94 Petro Can for 335i?
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11-04-2012, 07:30 AM | #45 | ||
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"Premium gas in regular-fuel cars not cleaner, expert says" http://www.cbc.ca/news/canada/story/...emium-gas.html Quote:
Have fun filling up your 335 with 87 octane, wait why not try diesel next time? |
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11-04-2012, 08:02 PM | #46 |
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11-05-2012, 10:40 AM | #47 | |
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11-05-2012, 01:44 PM | #48 |
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You probably could tell the difference depending on the conditions - in a hot summer day, a car running 94 would probably run better (and put down more power at load) than a car running 91. Also re: "quality" - there is no standard definition. The higher tier gas has more octane content and more cleaning agents/additives vs. the base gas - so perhaps some people equate that to quality.
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11-06-2012, 08:10 AM | #49 | |
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11-07-2012, 05:19 PM | #50 |
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Id say more pronounced on a tuned car, like ~10WHP or thereabouts depending on conditions,temp etc. On a stock car - its probably less but definitely noticeable, on the 335 anyways.
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11-07-2012, 08:59 PM | #51 |
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You'd be an absolute idiot to put 87 octane in a 335. Not only is the engine high compression, but also turbo and DESIGNED for 91 octane or higher fuel.
So take whoevers word you want, but I'll follow the BMW engineers word over any news reporter. |
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11-08-2012, 11:51 AM | #52 |
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I think you missed the point here.
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11-08-2012, 11:53 AM | #53 |
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Probably right on a tuned car but YOU could notice +/- 5 hp? I don't think anyone could unless you are on a track.
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11-08-2012, 12:07 PM | #54 |
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Just googled it and found a VW GTI on 87 made 203 hp and 207 on 91...about 4 more lbs/ft. Thats a car designed for 91 I believe. Going higher than manuf reccomends yields zero.
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11-09-2012, 07:23 AM | #55 |
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Tuning makes a big difference on our cars. I had my 100% stock car recently tuned on 94 octane and vdyno showed 350whp/380tq. We first loaded up OTS Stg 1 aggressive and it made 313whp/340tq. On a stock car it won't make much of a difference, you need an aggressive map to take advantage of the additional octane.
Thanks to Dzenno @ PTF for doing a great job Last edited by redlineryder; 11-09-2012 at 03:14 PM.. |
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11-09-2012, 02:36 PM | #56 | |
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As I said before, any benefit with higher octane depends on the conditions on the dyno and under certain conditions, the higher octane will put down more power (ie in higher heat/load scenarios). And yes, I can tell the difference between 91 and 94 even in my truck without the tune. |
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11-09-2012, 05:47 PM | #57 |
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There's a significant difference in my track times when going from 91 to 94 octane.
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11-12-2012, 08:40 AM | #58 | |
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Really? Whats the difference? |
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11-12-2012, 02:54 PM | #59 |
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11-12-2012, 03:14 PM | #60 |
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Hmmm
I wonder if I should throw a wrench in the mix and start talking about ethonal lol. Petro94 and shell91 can potentially give the same power since the 94 has ethonal which does not contain as much power in the chamber as the shell91 However you can run more timing on the 94 and probably make up the difference. Wrench tossed in |
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11-14-2012, 03:43 PM | #62 |
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diesel ftw
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