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Exhaust- / Sound Discussion

Nobody minds you joining in @Stash-N !! See if you think it makes any difference, I’m not sure it does. I use 99 out of habit, occasionally I fill up with 95 and can’t say I’ve noticed a difference. I brimmed it with 95 the other day, I’ll give it a listen tomorrow.
 
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Due for fuel-up and road trip today. Only fed her 95 until now and same km on the odo as @Stash-N , will try some 98 today but not expecting noticable difference in exhaust sound (or anything else really).
 
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Based on what has been said to my untrained eye it does somewhat sound like symptoms of higher octane. Slower to burn could make for less enthusiastic bangs and more carbon on the tailpipes due to unburnt fuel?
 
Based on what has been said to my untrained eye it does somewhat sound like symptoms of higher octane. Slower to burn could make for less enthusiastic bangs and more carbon on the tailpipes due to unburnt fuel?
Makes sense in theory, I am about to find out in the real world. Will leave it to @Stash-N to report his findings first though, will be a far more entertaining read ;)
 
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I didn't notice any difference with 95/98/102 fuel, sound wise.

Anyhow, I don't get the same bangs all the time, as the conditions are always different when you're out driving. Sometimes is one, some none, some 2, some 3.

On a side note, take into consideration that the first time you fill her up with "better" fuel, it'll have still ~10l old fuel in the tank.
Mine is the same, I don't always get the same number of pops and crackles.
 
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Based on what has been said to my untrained eye it does somewhat sound like symptoms of higher octane. Slower to burn could make for less enthusiastic bangs and more carbon on the tailpipes due to unburnt fuel?

I have ask the question before on here somewhere however you phrased it far better then I. It does make sense, I also read that the suppliers of fuel add and remove additives to the fuel in different month of the year winter vs summer this could also be a factor if I got fresh batch ot winter fuel
 
Really disappointing to not have a single video with sound as evidence of this phantom phenomenon. I run full E85 in my VT and it pops plenty when the exhaust is hot. Non-issue IMO.

 
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