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post #1 of 14 (permalink) Old 03-18-2009, 04:11 PM Thread Starter
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Worthy mods

Hey guys as a soon to be new jeep owner I'd like to know what mods I should get, if any, over stock. I see many here are getting the K&N filters etc. Ever notice any actual difference? Don't the K&Ns let a lot more dirt into the engine? I don't want to have to spend a lot or go some place to have a professional install something. Just looking for a few alterations that might increase the MPG while on a field trip.
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post #2 of 14 (permalink) Old 03-18-2009, 04:48 PM
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My last vehicle was an SRT8 Charger with the 6.1L Hemi. After doing a Diablo Tuner mod and AirRaid CAI, I went on a road trip to Fla. Averaged 20.1 mpg(trip computer) doing 80 mph at approx 2200 rpm, not to mention how those mods woke that big dawg up. Now, I have an '06 Limited 4.7l, and am planning another road trip to Fla in June. I am shooting for the same results with a K & N CAI and the new Superchips tuner.
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post #3 of 14 (permalink) Old 03-18-2009, 06:19 PM
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My last vehicle was an SRT8 Charger with the 6.1L Hemi. After doing a Diablo Tuner mod and AirRaid CAI, I went on a road trip to Fla. Averaged 20.1 mpg(trip computer) doing 80 mph at approx 2200 rpm, not to mention how those mods woke that big dawg up. Now, I have an '06 Limited 4.7l, and am planning another road trip to Fla in June. I am shooting for the same results with a K & N CAI and the new Superchips tuner.
How much of a mileage increase did you get in the charger?
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post #4 of 14 (permalink) Old 03-18-2009, 06:45 PM Thread Starter
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Does any of this kill the warranty?
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post #5 of 14 (permalink) Old 03-18-2009, 07:03 PM
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I have also heard that the K&N air filters let in more dirt and particles then the standard paper filter.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #6 of 14 (permalink) Old 03-18-2009, 08:32 PM
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I have also heard that the K&N air filters let in more dirt and particles then the standard paper filter.
Although I am not a big fan of K&N, I do strongly believe the filters capabilitys will meet or possibly exceed the factory filter.
I have never seen any evidence of debris getting through their filters.

Rob
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post #7 of 14 (permalink) Old 03-18-2009, 09:13 PM
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Although I am not a big fan of K&N, I do strongly believe the filters capabilitys will meet or possibly exceed the factory filter.
I have never seen any evidence of debris getting through their filters.

Rob
I use K&N all the time and have the same opinion as you but have heard that they dont work as well and let more particles in. I have not seen anyone prove it yet, just rumor!




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post #8 of 14 (permalink) Old 03-18-2009, 09:21 PM Thread Starter
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I have seen it. I had a F-150 on our farm growing up and when I'd remove the filter the tube would have dirt over the inside. However I was in dust that was extremely thick.
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post #9 of 14 (permalink) Old 03-18-2009, 09:52 PM
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My best guess on the mileage increase would be in the 2-3 range. I was concerned about the warranty as well, but my understanding is that the warranty would not cover changes made that might affect the vehicle in some way but would not invalidate the warranty itself. I believe this language is written into your factory warranty and from the manufacturers of the aftermarket items.
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post #10 of 14 (permalink) Old 03-18-2009, 10:00 PM
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Quote:
Originally Posted by ToiletDuck View Post
I have seen it. I had a F-150 on our farm growing up and when I'd remove the filter the tube would have dirt over the inside. However I was in dust that was extremely thick.
Well now, that would (and does) cause me great concern.
If you found any dust in the intake tract, you can rest assured a great deal of ingestion has taken place. Not a good thing, and Hell on rings, and cyl bores.

As I said, I'm not a fan of the product, but this has always been from the standpoint of they are a PITA to clean and correctly oil, not because of poor filtering.

My older son owns a demolition co. all Caterpiller equipment.
He and I share a somewhat fanatical belief regarding the capability of OEM air and oil filters, IE, its all we'll use.
When performing filter service on his equipment, we have never found any evidence of ingestion.
And, I'll tell ya, the dirt that pours out of those 3ft tall filters can be measured in pounds!
BTW, these filters can and are dry cleaned about 6 times before they must be replaced.

Anyways, if any who are following this thread have found evidence of ingestion, please report it.
I'm serious as a heart attack when I tell you this will cause unimaginable wear that would not be considered as warranty.

A truly interesting read,

Rob
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