I know not another mileage thread, but just curious if anyone else lost mileage after exhaust and volant. I have a CC 4X4 with Big Tow with 5,200 miles on it. I put the volant on first and was getting 14.23 mostly city stop and go driving. I put the JBA cat back system on and now I get 13.23. Anyone have any idea why. I did not reset the computer overnite. Any thoughts on this. Also, the JBA system I have replaced my rear cats with resonators. Maybe a problem?
Pardon my curiosity, but i could not help but respond to your post, while you were listening to your sweet sounding endurance V8 did you have your foot firmly planted on the gas pedal... by chance
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2005 Red Brawn KC LE
K&N FIPK Series 77
325/65/18 MT 18x9 Ultra Stargazers
Pro Comp 6" lift
Traction Bars
Donahoe coilovers
Bilstiens
Leafspring helpers
Dan Moore custom grill inserts
Banks Monster exhaust
Doesnt your check engine light stay on? The jba kit is only for the trucks with resonators if you have 4 cats you have to make custom pipes from the cats to the jba y pipe.
What exhaust do ya'll recomend? I just got a new Titan and i'm ready to start upgrading. I'm looking at either a KN or volant intake, and i'm curious which exhaust will sound and perform better?
If you are taking those mileage measurements since November, then they could be off by 1-2 mpg if you are using oxygenated fuel (lowers emissions). Since our pumps (in NM) have switched on 1 Nov, I have lost a consistent 1.6 mpg and an now down to 12mpg until Feb when they go back to regular gas.
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Scott
2004 White Titan SE CrewCab 4x4 - (SOLD)
2002 SOM Z28 - For haulin' arse
Well now I am really fed up with my truck as when i removed the rear cats and installed the jba's my light kept coming on. So i had to run new pipe from the cats to y of jba. That is what jba told me to do, the guy said nissan had originally told them that all titans had resonators. Which is what the truck had that they did there system on. I actually like the exhaust better then the flowmasters or dynomax i have already tried on the truck. It pulls up hills better and seems to pull trailers easier.
I know not another mileage thread, but just curious if anyone else lost mileage after exhaust and volant. I have a CC 4X4 with Big Tow with 5,200 miles on it. I put the volant on first and was getting 14.23 mostly city stop and go driving. I put the JBA cat back system on and now I get 13.23. Anyone have any idea why. I did not reset the computer overnite. Any thoughts on this. Also, the JBA system I have replaced my rear cats with resonators. Maybe a problem?
Mine had the EXACT opposite effect. The first tank or two, I was putting my foot through the floor to hear the intake/exhaust, but after that, the milage was MUCH better.
Maybe its the crappy Christmas gas we get like GETSOMZ28 said. Try resetting the computer and get some fuel that hasn't changed for the season (where?)?
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