#11
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Quote:
Kurt |
#12
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When I tune the LS engines, there are 2 sets of timing tables. One with much lower timing figures. The computer will revert back to the lower numbers when the knock sensors pick up anything. Generally the slight loss in power and MPG isn't even noticed by most owners.
I know the truck timing tables are extremely conservative due to the intended purpose the trucks are built for. I haven't been into the tunes on the newest trucks much past 2006, but I would assume not much has changed. Some tuners will copy/paste the high octane timing tables over the low octane timing tables to keep everything consistent, and still leave the knock sensors active to pull 3-4 degres when knock is present. But at this point I wouldn't recommend running the cheapest fuel in it. |
The Following User Says Thank You to x33rs For This Useful Post: | ||
69 Post Sedan (05-25-2018) |
#13
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I respectfully disagree on it being a waste of money. In my opinion, its waste of money.
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#14
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I have been running the higher octane in my 2003 Yukon XL2500 from about 60,000 miles, I noticed a performance difference and slightly better fuel economy by constantly running 91. It now has 140,000 miles and have only had to replace the map sensor.
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1971 W30 convert, triple green,second owner. 1971 W30 Convert, special order Rally red, under resto. 68 Charger R/T, Bullitt Replica 68 Camaro Z28,Corvette Bronze,Houndstooth www.vancouverclassiccars.com |
#15
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~ Pete .
__________________
I like real cars best...especially the REAL real ones! |
#16
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I have been running 87 in my 6.2 (not towing with it) as the price for premium has escalated higher than diesel. With the lower octane I have managed a new MPG high score on the display (33.5 for last 25 miles, 29.5 last 50). When I go to tow again I will def fill up back up with 91. But whats to say we are getting 91 out of the hose? Esp when there is only 1 hose for three fuel grades. I know they dont dedicate a truck for each fuel either.
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#17
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On a side note, I’ve gotten 28.5 on a 25 mile average. Kurt |
#18
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This.
Get a Cummins tow pig and never look back. |
#19
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I only pull my trailer 3 or 4 times a year. I can’t justify the extra money
PLUS the maintenance on a diesel. My 6.2 suits me well.... Kurt |
#20
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I think the load is light enough, that it isnt detonating and is able to keep the higher timing table. |
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