04-28-2019, 11:29 PM | #1 |
Drives: ZL1 1LE A10 Join Date: Mar 2015
Location: CA
Posts: 1,093
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91 Octane?
Curious to know if anyone else regularly puts 91 octane in their car and if they experience any hesitation/stumbling/roughness ? M6 ?
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Current: 2019 ZL1 1LE A10 Mods: MPS4s Tires | Borla Atak | CF Steering Wheel Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 Last edited by angryBits; 04-29-2019 at 12:19 AM. |
04-28-2019, 11:33 PM | #2 |
Drives: ZL1 1LE A10 Join Date: Mar 2015
Location: CA
Posts: 1,093
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My HP-Tuners data logger has shown that quite a bit of timing retard in various rpm ranges. These same areas are where I feel the car is hesitating/stumbling/bogging/farting.
I disconnected the negative battery cable for a few hours and reconnected and discovered my car was suddenly a rocket ship and no hesitation problems. Then after some WOTs and ECU-learning, they came back.
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Current: 2019 ZL1 1LE A10 Mods: MPS4s Tires | Borla Atak | CF Steering Wheel Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 |
04-28-2019, 11:38 PM | #3 |
Mid-Florida Camaro Club
Drives: 2019 ZL1 on Order Join Date: Jan 2011
Location: Heathrow, FL
Posts: 3,136
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Just moved to CA From FL so having to put 91 in now - definitely not as responsive but not much I can do about it really as can’t find 93 anywhere!
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04-29-2019, 12:06 AM | #4 | |
Drives: ZL1 1LE A10 Join Date: Mar 2015
Location: CA
Posts: 1,093
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Quote:
Hope yours does better.
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Current: 2019 ZL1 1LE A10 Mods: MPS4s Tires | Borla Atak | CF Steering Wheel Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 |
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04-29-2019, 12:11 AM | #5 | |
Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018
Location: CA
Posts: 1,360
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Quote:
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04-29-2019, 12:16 AM | #6 | |
Drives: ZL1 1LE A10 Join Date: Mar 2015
Location: CA
Posts: 1,093
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Quote:
My car is 100% stock. No E85. Out of curiosity, what brand of gas do you use? Random, or do you always use the same? Thanks
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Current: 2019 ZL1 1LE A10 Mods: MPS4s Tires | Borla Atak | CF Steering Wheel Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 |
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04-29-2019, 01:47 AM | #7 |
Account Suspended
Drives: '14 Jetta 1.8, '19 1SS Join Date: Mar 2010
Location: San Diego
Posts: 886
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I just put 91 in since I'm in CA. It's my 2nd tank. Who knows if the dealer used 91 or not.
My car doesn't hesitate on 91 at all. Goes like a raped ape. |
04-29-2019, 01:55 AM | #8 |
Drives: n/a Join Date: Nov 2017
Location: San Diego
Posts: 9
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Mine seems to run well on CA 91 octane. I'm not datalogging anything.
In my experience with other cars, most stumbling/roughness issues are ignition issues - could even be a bad ground somewhere. |
04-29-2019, 05:14 AM | #9 |
Drives: 2018 ZL1 1LE / Nightfall Grey Join Date: Apr 2013
Location: Montana
Posts: 114
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In montana - only 91 available, i think it also depends on altitude (3000 ft ASL here) i use exon senergy (top tier fule) - https://www.toptiergas.com
I don,t feel anything strange, however no place here to really open her up - I thought about an octaine booster, however it is not recomended from GM and im not sure if they are leaded product or not |
04-29-2019, 06:49 AM | #10 |
Drives: 2019 ZL1 Crush Join Date: Jan 2019
Location: Colorado Springs
Posts: 564
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91 here as well, no choice where I live for 93. No hesitation
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04-29-2019, 06:53 AM | #11 |
Craig
Drives: 2019 ZL1 1LE Join Date: Jan 2019
Location: Peterborough, ON Canada
Posts: 395
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Ultra94 from Petro here in Canada
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04-29-2019, 06:54 AM | #12 |
Drives: 20 X3M CP & 19 ZL1 1LE A10 Join Date: Jun 2013
Location: Brenham, TX
Posts: 3,517
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Any known reason why some states have no 93?
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04-29-2019, 06:59 AM | #13 |
@zle_blackwing
Drives: 2018 ZL1 1LE Join Date: Mar 2017
Location: S OC
Posts: 1,390
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I’m in Cali and I’ve been using Race Gas race fuel concentrate since the very 1st tank. It gives me peace of mind from detonation and gives me all 650 / 650. It takes 91 to 95.
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04-29-2019, 07:02 AM | #14 |
Drives: 18 ZL1 nightfall grey A10 Join Date: Apr 2018
Location: RGV Texas
Posts: 1,527
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Here in TX we have 93 at every pump. If we only had 91 I would add 4oz of Boostane to every tank. Would bring 91 up to 94. One can would last 8 fill ups.
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