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Programmer, 4.7L TB, rims & tires, intake filter, what next?
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Author:  evoljeep [ Thu Feb 18, 2016 8:12 pm ]
Post subject:  Programmer, 4.7L TB, rims & tires, intake filter, what next?
I have all of the above on my 2010 liberty sport. Was a bit disappointed with the pro power programmer not having a tire size option to tune.

After reading it seems a cold air intake as well as header were already designed about as good as it gets so I just bought a performance drop in.

I'd like an exhaust but not a really throaty or droney one, just something to beef it a bit with a low tone. I can't stand raspy exhaust tones, suggestions? Was looking at a flow master because I get them @ cost.

I just got the 4.7l tb and will be putting it in when work isn't so intense. I'd kill for cruise control and oem fogs but I need some research on exactly what all of that would cost.

I'd like a small lift, like 2" max. As I will not and do not utilize more than stock as is. No need for skids where I live & what I use it for either.

Anything else you would suggest? Maybe a scan gauge? Anything in terms of fuel economy that hasn't been done?

Thanks guys!
Author:  tjkj2002 [ Thu Feb 18, 2016 9:51 pm ]
Post subject:  Re: Programmer, 4.7L TB, rims & tires, intake filter, what n
All you listed does nothing for mpg's. Maintenance is the key.

Without actual internal modification a 4.7 TB,intake,or exhaust can not add any mpg's or power(moves power band is all).The engine can only suck in so much air un-modified.The stock exhaust is specifically tuned for max mpg's already,changing it will actually reduce mpg's and low end power.


Adding a lift will also reduce mpg's,more so if you add bigger then stock tires and don't re-gear.Re-gearing will net you "more power" without actually creating more HP or torque.


You want a 100% guarantee to increase mpg's is to plug your air filter and drive normally.Less air entering the engine equals less fuel being used.
Author:  tommudd [ Fri Feb 19, 2016 12:03 am ]
Post subject:  Re: Programmer, 4.7L TB, rims & tires, intake filter, what n
tjkj2002 wrote:
All you listed does nothing for mpg's. Maintenance is the key.

Without actual internal modification a 4.7 TB,intake,or exhaust can not add any mpg's or power(moves power band is all).The engine can only suck in so much air un-modified.The stock exhaust is specifically tuned for max mpg's already,changing it will actually reduce mpg's and low end power.


Adding a lift will also reduce mpg's,more so if you add bigger then stock tires and don't re-gear.Re-gearing will net you "more power" without actually creating more HP or torque.


You want a 100% guarantee to increase mpg's is to plug your air filter and drive normally.Less air entering the engine equals less fuel being used.



After trying sevearl things ( just to prove a point ) on mine He's right on all accounts
Gearing is the best way to go if going even up a size or so, rest ( CAIs/Exhaust etc ) are only playing games with your mind :wink:
Author:  sandman3573 [ Fri Feb 19, 2016 10:43 am ]
Post subject:  Re: Programmer, 4.7L TB, rims & tires, intake filter, what n
I'm glad I read this. Was on my way to get a 4.7 TB. Guess I'll just go buy a bottle of scotch
Author:  evoljeep [ Fri Feb 19, 2016 12:53 pm ]
Post subject:  Re: Programmer, 4.7L TB, rims & tires, intake filter, what n
Thank you guys, I will just skip it. What's bizarre is I average 12mpg around town... Figured well it's the bigger wheels and tires and I must drive like an booty.

Took the wife's charger for a week (she drives like super cautious mom) never speeds accelerates gently and we live in a flat area. Still the same mpg for her.

My tires must be killing it, 255/70/16. No I never get rub at stock height even on trails etc.
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