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My local area provides 92 Octane. I can get 100 Octane and maybe 112 Octane at the track.<p>Why should I bother to using gas above the normal 92 ?<p>I understand the higher the compression ratio the higher the Octane value should be for the gas to avoid the pre-ignition issue. I don't see that track driving changes my compression ratio so why would I use higher Octane gas ?
 

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Re: Hard aggressive track driving and use of high Octane gas (barrysharp)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>barrysharp</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Why should I bother to using gas above the normal 92 ?<p></TD></TR></TABLE><p>It's like crack cocaine for the car. You got to try once Barry to find out. Sean's got me hooked on the stuff and I'd use it daily if I could find the pumps and afford the prices on a regular basis. It's a good thing I can't find 100 octane all over...I need the 91 to help control my speeding. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 

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Re: Hard aggressive track driving and use of high Octane gas (barrysharp)

You got to try 100/92 mix. You'll know...<br>R (and any P2 running high boost) is sweet with high octane. Not just on track but on street too. Skip the 112, since it's probably leaded.
 

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Re: Hard aggressive track driving and use of high Octane gas (barrysharp)

damn good questioin Barry. Thank you for asking it. <p>We're heading to Puyallup for a family BBQ on Sunday, I'm likely to stop at the fabled gas station to get some 100 octane for the track day.<p>See you on Tuesday. With or without the race fuel!<p>Kevin
 

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Barry, our R's are factory tuned to deliver optimum power at or around 94 octane (US measurement). With our 92 max here in the Pacific NW you are not getting full power utilization when the engine senses 92 octane versus a blend that gets you up to 94 or 95. You notice the difference mostly at higher RPM's. I would think with your flashed ECU it might even be more pronounced.
 

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I have been using Toluene instead of race gas... 114 R+M / 2 Octane. Less than $6 a gallon too at ICI paints: <A HREF="http://www.icipaintsstores.com/storelocator/StoreLocator.jsp" TARGET="_blank">http://www.icipaintsstores.com...r.jsp</A><br>2 Gallons per tank with 91 octane yeilds 93.5 Octane and 3 gallons = 94.8. With 92 it is 94.4 with 2 Gallons of Toluene and 95.6 with 3 gallons. Anyway, for me it has been working great and is far cheaper than blending 100.
 
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