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mixing 111 leaded gas with 91 unleaded gas

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Old 04-26-2007, 08:42 PM
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hot85fifty
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Default mixing 111 leaded gas with 91 unleaded gas

im gettin my car dynoed and i was wondering if i could do that. what happens if i mix leaded with unleaded? will it work? or will it mess up my car?

should i run my car on 91 octain? mainly the 111 leaded? or mix both and come out with like 100?
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Old 04-26-2007, 08:46 PM
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Blck92GT
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Default RE: mixing 111 leaded gas with 91 unleaded gas

Get the car tuned with what you plan on running all the time. No since in getting it tunedwith the "good" gas when you will most likely be driving around with 91 (or whatever you can get, LV is 91 max thanks to tree huggin Cali) in the tank.
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Old 04-26-2007, 08:46 PM
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Default RE: mixing 111 leaded gas with 91 unleaded gas

using a higher octane gas will cost you HP... not gain you any... just use what you normally run
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Old 04-26-2007, 08:48 PM
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Default RE: mixing 111 leaded gas with 91 unleaded gas

i have got it tuned with 91 but im gonna dyno it and was thinkin about runing 100 octain. would i have to re tune the car if i change octain levels or will it work with the way i have it tuned now?
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Old 04-26-2007, 08:49 PM
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Default RE: mixing 111 leaded gas with 91 unleaded gas

ORIGINAL: AdderMk2

using a higher octane gas will cost you HP... not gain you any... just use what you normally run
alright ill run 91. shouldnt i be using higher octain because im running nitrous?
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Old 04-26-2007, 08:53 PM
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Derf00
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Default RE: mixing 111 leaded gas with 91 unleaded gas

ORIGINAL: hot85fifty

im gettin my car dynoed and i was wondering if i could do that. what happens if i mix leaded with unleaded? will it work? or will it mess up my car?

should i run my car on 91 octain? mainly the 111 leaded? or mix both and come out with like 100?
If you have a smog system, the lead will destroy the cats and O2 sensors. Other then that, you're fine.
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Old 04-26-2007, 08:55 PM
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Default RE: mixing 111 leaded gas with 91 unleaded gas

no cats or smog system... so will 100 octain or 91 octain give me better numbers on when i get the car dynoed?
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Old 04-26-2007, 08:55 PM
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cassidymustang
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Default RE: mixing 111 leaded gas with 91 unleaded gas

i say run the 111 for your dyno pull
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Old 04-26-2007, 08:57 PM
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Default RE: mixing 111 leaded gas with 91 unleaded gas

ORIGINAL: cassidymustang

i say run the 111 for your dyno pull
even with it tuned on 91? or does the octain not make a difference on the tune?
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Old 04-26-2007, 08:59 PM
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AdderMk2
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Default RE: mixing 111 leaded gas with 91 unleaded gas

ORIGINAL: hot85fifty

ORIGINAL: cassidymustang

i say run the 111 for your dyno pull
even with it tuned on 91? or does the octain not make a difference on the tune?

if your tuned for 91 octane... you will make less power running 111
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