Kreepin1
Well-Known Member
- First Name
- Kirk
- Joined
- Oct 27, 2020
- Threads
- 7
- Messages
- 646
- Reaction score
- 986
- Location
- Central Illinois
- Vehicle(s)
- 1982 CJ7, 2006 TJ, 2012 JKR, 2021 JLR
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From my seat it looks like @Livernois Motorsports has posted real world dyno results, logs, and taken the time to explain how they are getting the gains they have. You on the other hand are throwing around a lot of baseless claims and generally chitting in this thread.You say you are prepared with data - ok then, show me REAL WORLD results. Show me a dyno graph, 1/4 mile times, fuel logs, SOMETHING that proves that running premium actually does offer significant real world gains. Your degrees and percentages are all relevant to "normal" and as a result, very deceiving. Going from 1 to 2 is a 100% increase, but on a scale of 100, it's a change that won't even be noticed. So "put up or shut up" as they say - lets see the goods.
Again, i've been through this countless times with countless vehicles, and i've never seen real world gains in performance or fuel mileage from running premium over regular, JL included. I just got my Tahoe tuned this spring, and I gained 1.5mpg and smoother shifts...MAYBE a tiny bit of power but it's really tough to call. That's on premium with a tune. Given, the Tahoe and JL are different vehicles but the limitation is still the N/A motor. You just aren't going to gain much without FI or other modifications to get more air and fuel into the motor, and you sure as hell aren't going to gain just by changing fuel grades.
To anyone that knows engines you prove right there that you don't know what you're talking about. No gasoline engine on this planet needs 100 degrees of total advance. Most engines like 35 degrees plus or minus 5. Pulling 8 out of optimum is certainly going to cost power and efficiency. If you will go back and read what was posted with an open mind you might learn something.Your degrees and percentages are all relevant to "normal" and as a result, very deceiving. Going from 1 to 2 is a 100% increase, but on a scale of 100, it's a change that won't even be noticed.
The fact is, for a given air/fuel ratio each engine will have an optimum timing curve that requires a certain octane to run smoothly. Using fuel with a higher octane is a waste. Using fuel with a lower octane will require less ignition timing and WILL cost power and efficiency.
Having browsed the last 120 of your posts, I get that octane is one of your hot button issues. I also get that you love these on-line bickering sessions and will come back with some smart-ass response. But I won't be sucked into one of your pointless arguments. I am planning to get my Jeep an E85 tune from Livernois this fall in part because of the great info in this thread.
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