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Old 04-06-2013, 03:59 PM   #1
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Tune/Octane Damage

Before I really understood tuning and the octane grade I bought a SCT Bama tuner and set the Race tune for 91 octane. 91 octane is not available in my area. So for about 6 weeks I've been running 87 octane on my 91 race tune. I just switch to my 87 performance tune until I upload my new tunes from Bama. What kind of long term damage have I possibly put on my engine?
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Old 04-06-2013, 04:10 PM   #2
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No damage, your engine just won't run perfect because of the timing.
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Old 04-06-2013, 04:25 PM   #3
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Unless you kept the gas pedal buried you likely did nothing to it.
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Old 04-06-2013, 05:47 PM   #4
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No problem at all

The computer will still compensate for the octane difference. The Knock sensors take care of that. It will run a lot better when you do put in the 87 octane program though. It will even run better if you can find 91 or 93 in your area and retune for that.

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Old 04-06-2013, 06:12 PM   #5
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I agree, you probably didn't do much if any damage. These guys are spot on, these new motors have sensors for just about everything. I would recommend doing a little research on the benefits and reasoning behind higher octane. It's actually pretty interesting
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Old 04-08-2013, 11:49 AM   #6
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Quote:
Originally Posted by Tyriqq View Post
Before I really understood tuning and the octane grade I bought a SCT Bama tuner and set the Race tune for 91 octane. 91 octane is not available in my area. So for about 6 weeks I've been running 87 octane on my 91 race tune. I just switch to my 87 performance tune until I upload my new tunes from Bama. What kind of long term damage have I possibly put on my engine?
I agree with all the information being tossed around in here. As long as you weren't flooring the car everywhere you go, you most likely wouldn't have caused any issues. I don't see there being any long term issues from this, if there was something wrong you would probably already know it.

We can definitely adjust your tunes for you for octanes that are actually available in your location. Just give the Bama team a call and they'll gladly hook you up! Our Bama Performance tuning specialists are here in the building Monday-Friday from 9AM-5:30PM EST and Saturday 9AM-5:30PM EST. You can hit them up directly at 888.226.9764 and they'll get you squared away!

-Dan
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Old 04-08-2013, 12:05 PM   #7
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Will there be a point when tuners are compatible with Mac operating system. As of right now I have to go to a friend's house just to download tunes emailed to me
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Old 04-08-2013, 11:13 PM   #8
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Will there be a point when tuners are compatible with Mac operating system. As of right now I have to go to a friend's house just to download tunes emailed to me
I think diablos are Mac compatible and the itsx.
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Old 04-09-2013, 11:18 AM   #9
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The computer will still compensate for the octane difference. The Knock sensors take care of that. It will run a lot better when you do put in the 87 octane program though. It will even run better if you can find 91 or 93 in your area and retune for that.

Ronnie
Been rnning any of that race gas from the Daytona race track Ronnie?
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Old 04-09-2013, 12:55 PM   #10
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Hi Bucko

No, They sell the really high octane stuff when there is an event but it is still 10% ethanol to keep the air clean. When I was at events with my friends Randy and Jack they alway's took their Porsche's out to the Shell station to fill up with 93 octane Shell. My Mini got good MPG even at the track so my Shell lasted all day. They said not only was the Shell less then 1/2 the cost but the cars ran much better with it then the Sunoco they sell at the track. They were not the only one's to fill up at the outside stations.

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Old 04-09-2013, 01:42 PM   #11
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Yea, unfortunately this ethanol is here to stay. My sister-in-law keeps whining that her 63 Bonneville starts hard after sitting 2 to 3 days. That huge carter carb has two large bowl vents that allow the gas to evaporate, causing her to have to crank the engine for a few seconds to pump and fill the bowls. Ethanol causes the evaporation to happen faster.
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Old 04-09-2013, 03:00 PM   #12
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the only time this is really an issue is in supercharged cars with no knock sensor (such as 03/04 cobras) when detonation cant be stopped and causes damage.
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Old 04-09-2013, 07:03 PM   #13
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Bucko is 100% correct

My friend Shari has a 66 Mustang and when it sits she has to pump the heck out of it to get it started. Same with my 88 Samurai. It seems the gas just don't stay in the float bowls on the old cars. My friend Ed has the same problem with his old 70's Buick.

There is a bill that may do away with Ethanol in Florida that already passed the house. I'm really hoping it goes all the way and gets passed to eliminates this crap in the gas that causes the gas to cost more and get lousy MPG.

Letter from Matt Gaetz Districk 4 Florida House of Rep's

Dear Friends,

With your support and testimony, HB4001 has officially cleared the House Energy and Utilities Subcommittee and is one step closer to relieving consumers of Florida’s oppressive ethanol mandate. The next stop for HB4001 will be the House Regulatory Affairs Committee. I look forward to working with the committee members and to sharing with them the overwhelming evidence provided by business owners and constituents throughout the state.

Please wait for details to come regarding this committee meeting. Thank you again for your dedication to this issue.

All the best,



Matt









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Old 04-09-2013, 08:06 PM   #14
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Nothing. It is better to run the proper tune with the proper gas though.
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Old 04-09-2013, 08:12 PM   #15
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Does anyone know anything about running an even higher octane? Like 100-110?

I have seen it a few times, up to 6.899/gallon lol, and was wondering what all may occur.
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Old 04-10-2013, 12:06 AM   #16
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Does anyone know anything about running an even higher octane? Like 100-110?

I have seen it a few times, up to 6.899/gallon lol, and was wondering what all may occur.
It will just get you better performance and your engine will run cooler. It is basically the same as if you used method injection. I had to run 100 to see if my knock was false or not
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Old 04-10-2013, 06:41 AM   #17
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Originally Posted by ronnie948 View Post
My friend Shari has a 66 Mustang and when it sits she has to pump the heck out of it to get it started. Same with my 88 Samurai. It seems the gas just don't stay in the float bowls on the old cars. My friend Ed has the same problem with his old 70's Buick.

There is a bill that may do away with Ethanol in Florida that already passed the house. I'm really hoping it goes all the way and gets passed to eliminates this crap in the gas that causes the gas to cost more and get lousy MPG.

Letter from Matt Gaetz Districk 4 Florida House of Rep's

Dear Friends,

With your support and testimony, HB4001 has officially cleared the House Energy and Utilities Subcommittee and is one step closer to relieving consumers of Florida’s oppressive ethanol mandate. The next stop for HB4001 will be the House Regulatory Affairs Committee. I look forward to working with the committee members and to sharing with them the overwhelming evidence provided by business owners and constituents throughout the state.

Please wait for details to come regarding this committee meeting. Thank you again for your dedication to this issue.

All the best,



Matt









Ronnie
That would be nice, except it would most likely give the gas companies an excuse to raise the price of gas by 30 cents a gallon!
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Old 04-10-2013, 08:00 AM   #18
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It would actually lower the cost of food Etc.

I'm trying to find the Bill Sponsors argument for presenting this bill that actually states how much it is costing the state and gas suppliers a bunch of money to add this crap that is ruining a lot of equipment as well as lowering the MPG on each car running that uses it. Wonder why a cob of corn costs a dollar or more, A can of corn is $1.49 or more. Price sugar lately? All can goods cost way more then they should. The Ethanol they put into the gas we are forced to use is costing way more then what the gas company's charge. The crap is subsidized by the taxpayer and taxes on food suppliers.

Matt seems to be certain that when Florida drops this Ethanol Mandate the most of the rest of the states will follow.

We will see what happens.

Ronnie
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Old 04-11-2013, 06:38 AM   #19
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Nothing. It is better to run the proper tune with the proper gas though.

Couldnt of said it better myself!
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