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is there a HP boost with lund octane difference

Drckiss

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just like the title says, I am interested in a Lund Ngauge tune but with what octane, I like the 87 price but is it a large enough difference to go with 93?
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Derek@Lethal

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There's definitely a good power difference between 87 and 93 octane. You can use 87 with the 93 tune as Lund does not modify knock sensor sensitivity from OEM, but you will not make the same power. A lot of people will use 87 for commuting on the highway long distances to save a few bucks at the pump but don't be surprised if you are monitoring KNOCKR on the nGauge to see the PCM pulling timing when passing or getting aggressive with the throttle.

http://www.lethalperformance.com/e-motion-ngauge-tuning-and-monitoring-gauge.html

If you have any questions about the nGauge and/or Lund tuning, don't hesitate to contact us!

Thanks
 

racer24crm

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There's definitely a good power difference between 87 and 93 octane. You can use 87 with the 93 tune as Lund does not modify knock sensor sensitivity from OEM, but you will not make the same power. A lot of people will use 87 for commuting on the highway long distances to save a few bucks at the pump but don't be surprised if you are monitoring KNOCKR on the nGauge to see the PCM pulling timing when passing or getting aggressive with the throttle.

http://www.lethalperformance.com/e-motion-ngauge-tuning-and-monitoring-gauge.html

If you have any questions about the nGauge and/or Lund tuning, don't hesitate to contact us!

Thanks
That's good to know. I was always curious if you could run a lower octane than what you are tuned for. I will most likely be tuned for 92 as that is what is most easily available for me here in South Eastern PA. One of my concerns was that I would be on a trip or somewhere that didn't have high octane gas that I could hurt my car or it wouldn't run if I was forced to use 87.
 

bigred90gt

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How about the difference between 87 tune and 91 tune? 91 is more widely available as the highest octane around here than 93 is. 93 is available at random stations, just not as prevalent as 91. Most stations around here are 87, 89, 91.
 

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Derek@Lethal

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How about the difference between 87 tune and 91 tune? 91 is more widely available as the highest octane around here than 93 is. 93 is available at random stations, just not as prevalent as 91. Most stations around here are 87, 89, 91.
Then request the 91 tune and when you come across 93 and want to use it, put it in the tank and the PCM will add timing on it's own.
 

bigred90gt

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Then request the 91 tune and when you come across 93 and want to use it, put it in the tank and the PCM will add timing on it's own.
I plan to do that, I was just curious as to the difference observed between the 87 tune and the 91 tune.
 

LethalPerformance

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Better fuel = Better performance


Give us a shout if you have any other questions. We're Lund Racing's largest dealer and are here to assist you.

Thanks!
 

BayouDude82

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There's definitely a good power difference between 87 and 93 octane. You can use 87 with the 93 tune as Lund does not modify knock sensor sensitivity from OEM, but you will not make the same power. A lot of people will use 87 for commuting on the highway long distances to save a few bucks at the pump but don't be surprised if you are monitoring KNOCKR on the nGauge to see the PCM pulling timing when passing or getting aggressive with the throttle.

http://www.lethalperformance.com/e-motion-ngauge-tuning-and-monitoring-gauge.html

If you have any questions about the nGauge and/or Lund tuning, don't hesitate to contact us!

Thanks
My state has 93 almost everywhere. The only thing that concerns me about getting a tune is when traveling to nearby states on rare occasions where only 91 is available. So what you are saying is that I am okay to run 91 with a 93 Lund tune? Been running 93 on the stock tune since day 1. This may help ease any worries. Are any other tunes on the market that are able to do this "octane adjust" as well? Just was always under the impression that running a lower octane than tune is set up for is a big no no.
 

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LethalPerformance

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My state has 93 almost everywhere. The only thing that concerns me about getting a tune is when traveling to nearby states on rare occasions where only 91 is available. So what you are saying is that I am okay to run 91 with a 93 Lund tune? Been running 93 on the stock tune since day 1. This may help ease any worries. Are any other tunes on the market that are able to do this "octane adjust" as well? Just was always under the impression that running a lower octane than tune is set up for is a big no no.
It's ok to run the 91 on a 93 tune. You car will adjust for lower octane fuel by lowering timing tables by utilizing the factory knock sensors. Once you put better fuel back in the car and there's no knock detected the timing table will return to where it was and become more aggressive.

Please let us know if you have any other questions.


Thanks, Jared
 

Derek@Lethal

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My state has 93 almost everywhere. The only thing that concerns me about getting a tune is when traveling to nearby states on rare occasions where only 91 is available. So what you are saying is that I am okay to run 91 with a 93 Lund tune? Been running 93 on the stock tune since day 1. This may help ease any worries. Are any other tunes on the market that are able to do this "octane adjust" as well? Just was always under the impression that running a lower octane than tune is set up for is a big no no.
The stock tune and Lund Racing tunes will adjust for octane levels of gasoline fuels. The car has knock sensors that listen to whats going on in the combustion chamber, it's a factory feature that Lund Racing retains. Some other tuners have messed with knock sensor sensitivity to get the PCM to ignore knock and increase timing for performance, but you can hurt pistons that way easily, that's why Lund does not touch that. If your fuel has good octane, the PCM will increase the timing on it's own. If it hears knock/detonation, it will pull timing to keep the engine safe until fuel quality improves. In short, yes, you can run 91 octane on a 93 tune with the 5.0L cars.
 

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My state has 93 almost everywhere. The only thing that concerns me about getting a tune is when traveling to nearby states on rare occasions where only 91 is available. So what you are saying is that I am okay to run 91 with a 93 Lund tune? Been running 93 on the stock tune since day 1. This may help ease any worries. Are any other tunes on the market that are able to do this "octane adjust" as well? Just was always under the impression that running a lower octane than tune is set up for is a big no no.
the built in wide bands will compensate for the difference in fuel

you shouldn't have an issue running the tune.
 

Derek@Lethal

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Thanks for all the Orders. Keep em coming
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