My 4.7 liter seems to run better on the 91 octane especially with the 91 octane tune on the flashpaq. If I don't run that tune the transmission shifts weird due to the fat meats I'm Rollin on
My 4.7 liter seems to run better on the 91 octane especially with the 91 octane tune on the flashpaq. If I don't run that tune the transmission shifts weird due to the fat meats I'm Rollin on
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
same here... she shifts so much crisper and runs so much smoother on the 91 tune with 91 in the tank.Originally Posted by 07JeepXK
yes my mechanic is a bit on the older side.
2007.5 WK Laredo
- OEM+ -
Running a higher octane with a tune and feeling a difference in performance is different from running high octane to "clean out" your fuel system.
Just make your choices based on the right reasons.
2007 Commander Overland / 4" SuperLift / 285/70R17 Cooper Discoverer ST Maxx / Rusty's adjustable rear UCAs / Carolina Driveline front drive shaft / Flashpaq / DRLs & Tilting Mirrors / Autolite Iridiums / Cobra 29LX Chrome LE CB & Firestik antenna / Rear fog lights / Mopar Grille Guard with HID driving lights
"4 wheel drive does not mean 4 wheel stop!" -Lee Goldberg, WABC TV weatherman
That is true.
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
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