Non Oxy Gas
12-28-2013, 10:53 PM
#11
These are really sweet looking tubes under there though.
12-28-2013, 11:59 PM
#13
Opinionated Blowhard
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engineermike (12-29-2013)
12-29-2013, 02:04 AM
#15
As others have said, aftermarket CAIs on modern vehicles do nothing really for MPGs and the only power gains you'll get will be above ~4,000rpms. They are louder though and I think that tricks a lot of people into thinking they are making a lot more power when the reality is the gains are usually less than 10hp (if that). Taking into account the bigger tires your 13.5mpg is really a hair over 14. Not bad at all for the conditions you're dealing with. As far as the fuel type goes ethanol free is your best bet otherwise just stick with 87. Running mid-grade or premium only helps mileage if you drive spiritedly or tow/haul heavy loads...and in my truck the gains are better the hotter it is so in the winter they are nill. Remember, the higher the octane the more it resists detonation so unless like I previously mentioned you are putting more strain on the engine than normal (flogging it, towing/hauling heavy loads) it really does no good to run it.
Last edited by ClaySlayer; 12-29-2013 at 02:13 AM.
12-29-2013, 06:41 AM
#16
These engines do like it warmer than 60, under 110 and a good tail wind. LOL
12-29-2013, 10:06 AM
#17
Senior Member
Thread Starter
I've seen a lot of things about the Livernois tune. Not sure what would be best for me... Here in MN we have 87 89 and 92 octane fuels. What would be suggested for the 3 tunes that they set up for the truck. I do pull at tandem axle trailer that when full is 7500lbs so I am sure I would like a towing tune and performance tune...?
12-29-2013, 10:10 AM
#18
Senior Member
Thread Starter
As others have said, aftermarket CAIs on modern vehicles do nothing really for MPGs and the only power gains you'll get will be above ~4,000rpms. They are louder though and I think that tricks a lot of people into thinking they are making a lot more power when the reality is the gains are usually less than 10hp (if that). Taking into account the bigger tires your 13.5mpg is really a hair over 14. Not bad at all for the conditions you're dealing with. As far as the fuel type goes ethanol free is your best bet otherwise just stick with 87. Running mid-grade or premium only helps mileage if you drive spiritedly or tow/haul heavy loads...and in my truck the gains are better the hotter it is so in the winter they are nill. Remember, the higher the octane the more it resists detonation so unless like I previously mentioned you are putting more strain on the engine than normal (flogging it, towing/hauling heavy loads) it really does no good to run it.
12-29-2013, 10:18 AM
#19
What does it mean "resists denotation" I will be putting between 4-6k miles a year on my truck pulling a tandem axle trailer so I would like to what I am gaining with higher octane gas... I am not familiar how these different octane gas' react and why they are better or worse
This is the simple version anyway!
12-29-2013, 10:24 AM
#20
Senior Member
Thread Starter
Under high compression or with high heat (and often both) low octane gas may detonate without spark plugs firing. Your motor can adjust to prevent this because its effects vary from an annoying sound to broken engine. When the engine adapts it reduces power. So you get a bit more power with high octane gas. But the real benefit kicks in under heavy stress where it would have adjusted and lost power using low octane. With high octane it just keeps going.
This is the simple version anyway!
This is the simple version anyway!