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Re: no quirk here either Posted by B Millar [Email]  (#1109)  [Profile/Gallery]
(more from B Millar) on Mon, 18 May 2009 11:11:39
In Reply to: no quirk here either, bobc  [Profile/Gallery]
, Mon, 18 May 2009 10:52:38
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I am 100% positive all that stuff in working 100% on my car. I swear, it's the gas as they switch to the summer blends. I've been using Mobil gas (93 Octane), maybe you guys aren't? My '01 V6 did this too every May(ish). I'm sure lots of posts will start popping up with people reporting the same thing. It's only the first start of the day. After that everything is a-okay. From ask.com:
"The difference between conventional summer- and winter-blend gasoline has to do with the Reid Vapor Pressure of the fuel. RVP relates to the volatility of a gasoline. The more volatile a gasoline, the more likely it will evaporate as the temperatures rises; evaporated gasoline contributes to unhealthy ozone and smog levels. Summer gasoline has a low RVP and is less likely to evaporate when compared to the high RVP winter grade. The Environmental Protection Agency says conventional summer-blend gasoline contains 1.7 percent more energy than winter-blend gas, which contributes to the summer blend’s slightly better gas mileage.
The Energy Information Administration says the switch between the two fuels happens twice a year, once in the fall (winter blend) and again in the spring (summer blend). Summer-blend gasoline is typically more expensive to produce than the winter blend, and it won’t affect vehicle performance or the durability of the engine and fuel system, according to the EPA.
In many large cities as well as California and New England, the EPA requires the use of reformulated summer- and winter-blend gasolines. These RFGs contain oxygenates that lower RVP and other toxic chemicals even further than conventional gasoline."
I think being that Trionic relies so heavily on the information it receives from the DI cassette for fuel/air/spark that when they start changing to the summer blends it gets confused. Being that it looks like they change the gas to accommodate different temperatures, maybe they don't change it down south? bobc is in NC, right? TG, where are you?
, Mon, 18 May 2009 14:41:07, Mon, 18 May 2009 10:12:39, Mon, 18 May 2009 10:52:38, Tue, 19 May 2009 15:09:54, Mon, 18 May 2009 11:11:39 <-- Viewing This Message, Mon, 18 May 2009 14:20:56
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