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I did another 2 tanks of 94 from farther chevrons a and got new coils. Still had the timing being pulled and knocking, all which went away when I turned on the wmi. I was tuned on 94 chevron winter blend and it ran/datalogged really well. Something has clearly changed in the fuel.
Right now on YouTube he has an update video pending upload (premiering) doing the summer blend of fuels and I’m extremely interested. I wonder if he knows about revscene and our thread
I've been running E15 blend w/Chevron 94 in my FBO W204 C63. I picked up 17whp by adding the ethanol, haven't had any issues and my tune is not ethanol based.
Just want to update I finally drove the car yesterday after filling with Shell. I filled up with Shell after 2 tanks of bad Chevron 94. No hesitation on this tank of Shell. Will report back in another month when I need to fill up again.
TL;DR -- our Vancouver summer blend gas still sucks
Petro Can Ultra 94 - 282.370 hp / 260.841 lb-ft
US (WA) Chevron 92 - 286.329 hp / 262.418 lb-ft (w/ zero knock!)
Chevron 94 - 276.164 hp / 259.981 lb-ft
Chevron 91 - 278.737 hp / 258.897 lb-ft
Shell 91 V-Power - 251.729 hp to 272.490 hp / 252.797 lb-ft to 255.346 lb-ft (between 3 runs)
Costco 91 - 271.807 hp / 251.007 lb-ft
TL;DR -- our Vancouver summer blend gas still sucks
Petro Can Ultra 94 - 282.370 hp / 260.841 lb-ft
US (WA) Chevron 92 - 286.329 hp / 262.418 lb-ft (w/ zero knock!) Chevron 94 - 276.164 hp / 259.981 lb-ft
Chevron 91 - 278.737 hp / 258.897 lb-ft
Shell 91 V-Power - 251.729 hp to 272.490 hp / 252.797 lb-ft to 255.346 lb-ft (between 3 runs)
Costco 91 - 271.807 hp / 251.007 lb-ft
Thank you once again for doing this, Adam~!
Wait... so Chev 91 and 94 is basically the same? Might as well save money and get 91 then..
Is there any possibility that different cars would have different outcomes or would it be pretty consistent with these findings?
I'm not talking about specific numbers, but say, Chevron 91/94 is always going to come out on top of Shell? Or would different setups respond differently?
__________________ __________________________________________________ Last edited by AzNightmare; Today at 10:09 AM
Last edited by AzNightmare; 07-02-2021 at 12:49 AM.
I think there are too many variables to say for sure whether Chevron 91/94 will always come out top of Shell. As you mentioned, different cars and conditions will respond differently, and one would have to take the extra precaution to ensure which blend is being used from their gas station.
I'm not sure how the second run using Shell amounted in a 21HP jump from the first run on Shell. (Admittedly, I didn't watch the video.)
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Wait... so Chev 91 and 94 is basically the same? Might as well save money and get 91 then..
Is there any possibility that different cars would have different outcomes or would it be pretty consistent with these findings?
I'm not talking about specific numbers, but say, Chevron 91/94 is always going to come out on top of Shell? Or would different setups respond differently?
Both my ST and RS being tuned going through multiple revisions the tuner landed on “94 is too inconsistent and gives almost the same results, just use 91”. So that seems about right.
TL;DR -- our Vancouver summer blend gas still sucks
Petro Can Ultra 94 - 282.370 hp / 260.841 lb-ft
US (WA) Chevron 92 - 286.329 hp / 262.418 lb-ft (w/ zero knock!)
Chevron 94 - 276.164 hp / 259.981 lb-ft
Chevron 91 - 278.737 hp / 258.897 lb-ft
Shell 91 V-Power - 251.729 hp to 272.490 hp / 252.797 lb-ft to 255.346 lb-ft (between 3 runs) Costco 91 - 271.807 hp / 251.007 lb-ft
Now this is surprising. V-Power isn't good, but Costco is?
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According to Adam (the VanCity Audi dude), Racing Greed explained the variance with Shell V-Power being most likely a case of the ECU trying to advance timing to deliver more power, only to realize that something wasn't quite good enough, and had to dial back on the ignition.
Based on the results, I wouldn't say Costco is necessarily better than Shell V-Power, or that Chevron 91 is always as good as their 94 gas. What we can see is -- Costco gas seems to be far more consistent, whereas Shell V-Power might have a bit more headroom for extra power, but the ECU might do funky things in attempt to dip into that extra headroom.
The consistency issue with Chevron 94 is something I have anecdotally observed myself as well, as some days my cars will feel noticeably stronger with one batch of Chevron 94, while on other days, it seems more tame.
Suffice to say, my personal takeaway from this series of winter + summer blend review is -- if I am regular street driving, I am just gonna go get whichever brand of gas that is cheapest and most convenient. If I am heading for the track, I'll try my best to run a tank of Chevron 94 before I actually hit the track so that the ECU can adapt to the fuel, after which I will run Chevron 94 at Mission. If I'm at Area 27, I'll fill up with the Oliver Petro Canada Ultra 94. If I am in the States, I'm gonna get Shell V-Power 92 or Chevron 92.
The Blaine gas was brought up by a friend who is an essential worker that still crosses the border.
Both my ST and RS being tuned going through multiple revisions the tuner landed on “94 is too inconsistent and gives almost the same results, just use 91”. So that seems about right.
Who are you tuning with?
__________________ __________________________________________________ Last edited by AzNightmare; Today at 10:09 AM
It really sucks that only Chevron is selling 94 octane gasoline here. I still remember the days when both Petro Canada and Husky carries 94 octane gas as well. With all the supercars that Vancouver has, you'd think that there is a bigger market for it. But nope... just Chevron 94...
Speaking about fuel, does any one use additives? I was recommended Luca's upper cylinder lubricant. Apparently it increases mpg, and cleans out your fuel system + injectors. Some people seem to use it every few months as a treatment, or some add some in in every fill up
Speaking about fuel, does any one use additives? I was recommended Luca's upper cylinder lubricant. Apparently it increases mpg, and cleans out your fuel system + injectors. Some people seem to use it every few months as a treatment, or some add some in in every fill up
Most of the stuff out there doesn't really work for DI engines. Liqui Moly has something that is specifically for it, so I'm considering giving it a try.
It really sucks that only Chevron is selling 94 octane gasoline here. I still remember the days when both Petro Canada and Husky carries 94 octane gas as well. With all the supercars that Vancouver has, you'd think that there is a bigger market for it. But nope... just Chevron 94...
If you have a car making 500 plus HP 40 to 50 HP ether way is not going to make a difference driving on the street.
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