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Old 08-16-2015, 05:34 PM
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Trading in for diesel vs cai/exhasu/programer

Trying to decide on what to do. I have a 2011 WK2 with the 5.7. I'm trying to decide if it would be better to do a CAI, Exhaust, and a programer on my wk2 or trade it in for a new diesel. I'm looking to get better fuel millage and some performance to go with it. I went and looked at a 15 with the diesel and it was nice but the MPG wasn't that impressive. Ive been doing lots of reading on here and other sites and was going to go with the Diablo trinity, Corsa system and the AFE CAI. I have yet to find someone that has done all three mods and posted real world MPG results. Can anyone give me some feedback. Thanks!

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Old 08-16-2015, 07:38 PM
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Re: Trading in for diesel vs cai/exhasu/programer

You may get a slight bump in milage but even if you got two MPG's better, which I doubt you will, your not going to get close to the diesel. The programmer is your best bet for an increase but don't expect much, skip the other two unless your after more sound.
How many miles on your WK2 now?
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Old 08-16-2015, 07:59 PM
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Re: Trading in for diesel vs cai/exhasu/programer

It's got 82000 on it. I get about 18-19 on the highway and 15-16 in the city. Love the jeep but would like something that gets somewhat decent mpg on the highway for road trips.
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Old 08-17-2015, 05:22 PM
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Re: Trading in for diesel vs cai/exhasu/programer

I think you'll get much better milage than you get now with the diesel but at what cost? If you were buying a new one anyways, then I would get the diesel. If you plan on keeping the 11 for a long time, get some new plugs and wires and new air filter and see what that does for you.
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Old 08-17-2015, 05:45 PM
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Re: Trading in for diesel vs cai/exhasu/programer

Please correct me if I'm wrong but I didn't think that it had wires. Just plugs. I thought it had individual coil packs.
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Old 08-17-2015, 06:06 PM
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Re: Trading in for diesel vs cai/exhasu/programer

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Originally Posted by sldpulr View Post
It's got 82000 on it. I get about 18-19 on the highway and 15-16 in the city. Love the jeep but would like something that gets somewhat decent mpg on the highway for road trips.
The diesel will do 30mpg on the highway, 19-20 around town, I'm getting 18 at the moment, and that is short trips in hilly area and mashing the right pedal. And I run aggressive ATs.
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Old 08-18-2015, 01:50 PM
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Re: Trading in for diesel vs cai/exhasu/programer

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Originally Posted by sldpulr View Post
Please correct me if I'm wrong but I didn't think that it had wires. Just plugs. I thought it had individual coil packs.
I had a 5.7 Hemi in my previous car (Dodge Magnum R/T). I believe the spark plug wire kit has 8 spark plug boots for each coil pack and 8 wires with boots to connect each coil pack to the appropriate spark plug on the "360 degree off" cylinder.
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Old 08-18-2015, 03:14 PM
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Re: Trading in for diesel vs cai/exhasu/programer

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Please correct me if I'm wrong but I didn't think that it had wires. Just plugs. I thought it had individual coil packs.
Im getting old I guess, I said that out of habit.
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Old 08-18-2015, 08:02 PM
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Re: Trading in for diesel vs cai/exhasu/programer

I'm already older than dirt (at least according to my son) but it sure beats the alternative! Besides which I think you gave good advice.
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Old 08-18-2015, 08:42 PM
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Re: Trading in for diesel vs cai/exhasu/programer

Sounds to me you have already decided you want better mpg so going with the diesel is a no brainer. Just now there is an additional cost for the diesel which I honestly don't think it's worth it but that's just me.
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Old 08-18-2015, 08:51 PM
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Re: Trading in for diesel vs cai/exhasu/programer

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Im getting old I guess, I said that out of habit.
I would have said the same thing. It's habit when you grow up working on small block chevys.
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Old 08-18-2015, 08:55 PM
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Re: Trading in for diesel vs cai/exhasu/programer

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Sounds to me you have already decided you want better mpg so going with the diesel is a no brainer. Just now there is an additional cost for the diesel which I honestly don't think it's worth it but that's just me.
I love my wk2 and would just assume keep it if I can get better fuel mileage. I came across a article that said the spark plug change interval was 30,000 miles. I'm going to start with that and see where it gets me. Then then throw some go fast parts at it. I'm sure my mpg will go down with exhaust, cai, and a programmer due to the fact that I will want to drive it faster but I'm really looking for highway mpg on trips.
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