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Jeep Cherokee Performance Chip

Alright, I feel that it’s my duty to provide a rip-off report due to the fact that I was ripped off by such a product many years ago when these first started surfacing.  The classic Jeep Cherokee Performance Chip.  Do a quick search in eBay on “jeep cherokee performance” and no doubt you will see the page littered with claims of ‘100 Horsepower’ and ‘+40 MPG’ all of which seem to be too good to be true.  And what’s your gut tell you?  Steer clear, but then the little performance hog in you wonders if it could actually work, even though the product is only $20.

Well your gut was correct.  These products are ripoffs.  Here’s how the creators of these high performance chips claim you increase your horsepower OR get better gas mileage:

“The way our Performance Modules work is by sending a modified signal through a factory sensor in the engine compartment, called the IAT sensor. This signal alters the computer and the computer then reprograms itself for a more efficient air/fuel mixture. Your vehicle from the factory may come too rich or too lean - meaning too much fuel (rich) or not enough fuel (lean). You may see cars and trucks on the road blowing a lot of black smoke out of their exhaust pipes. This means that their motor is running rich and they are throwing money away and wasting all of that gas and hurting the environment as all of that black smoke is raw, unburned fuel.

By modifying the air/fuel mixture to a more efficient mixture, you are tapping into hidden performance, and by gaining performance in your vehicle, you do not have to push the gas pedal down as hard to get up to speed, so therefore the fuel savings are enormous!” - mindblower_performance

 

Wow, that makes sense right?  Well don’t start typing your PayPal email address yet.  Let’s be honest gains of 100 horse power out of a $20 module are completely unrealistic.  And as I said before, I purchased one with the hopes that it just might work.  Well, I can reassure your gut instinct, these claims are 100% false.

Product Descrption:

So how does this high performance chip work?  It’s quite simple actually, actually a little too simple.  The ‘module’ wires in between the cars IAT or MAS sensor and the cars computer.  It ‘tricks’ the car into thinking it’s running too lean thereby adding fuel or ‘horsepower’; or into thinking it’s running to rich thereby using less gas or ‘improved mileage’.  So what is this absolutely amazing module?  It’s a resistor.  Yeah, like the ones you can buy at radioshack for a quarter.  That’s how it alters the signal, it adds resistance.  A simple trick into making your car run leaner or richer.

Will It Work At All?

It could possibly work a little, but you are altering a signal sent by OEM equipment.  You could possibly end up failing smog or ruining your engine.  If your looking for a performance chip look into JET Chips.  These are real performance chips, but not at the low low price of $20.  There are much better ways of increasing your horsepower.  Take a look at my article that deals with exhaust and intake modifications.


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Product Summary

Rubicon Express 2" Budget Lift

Manufacturer: Rubicon Express

Product: 2″ Budget Lift Kit

Price: $230 - $260

The Good:

It seems to be cliche for this class, budget, of product, but it doesn’t go without saying that this is a great price.  Most people I’ve talked to about this lift kit from Rubicon Express say they can’t get over the price.  And they’re right on with this lift coming in in the mid $200 range.

Unlike some budget Cherokee lift kits, one benefit to the Rubicon Express Budget Lift Kit is that it comes with shocks.  Unfortunetly, theres a lot of ‘budget’ kits out there that are either poor build quality or lack even the few necessary components to perform the simple lift, like shocks.

Even though it’s a budget kit, it is of the highest build quality.  The Rubicon Express Budget Lift Kit comes with great installation instructions that can be found on Rubicon Express’ website here.  I wouldn’t say installation is a breeze, because every install has it’s problems, however, installation is very straight forward and with those instructions provided by Rubicon Express, it makes installation just that much easier.

The Bad:

I can hear you saying it now, “what’s the catch?”.  Well, while this offer probably doesn’t sound like it’s too good to be true, it still has its catches.  For one, the ride’s definetly a bit rougher and stiffer than stock.  This is mainly do to the add-a-leaf stiffening up the back suspension.

Also, don’t expect to be able to throw 33″ inch tires under your XJ after you’re done with your install.  You’re looking at most at a 30″ tire with decent articulation.  (Checkout my article on Lift Kits and Tire Clearance)  Obviously because this is not a complete suspension kit you’re not going to get quite as much articulation as you would with say a 3″ suspension kit.

The Bottom Line:

The price speaks for itself on this one.  If you’re looking for a little extra clearance and don’t want to break the bank, then you should definetly consider this as an option.  If you’re looking to throw 33’s under your Cherokee, you should probably look at something a bit bigger.  Without the risk of sounding completely redundant, if this fits your budget and into your plans it’s a good deal.

Kit Includes:

  • 1.75″ Coil Spring Spacers
  • Add-A-Leaf 2″ Half LE
  • Replacement Center Pins for Leafs
  • 18″ Brake Line
  • 4 Twin Tube Shocks

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Product Summary

Goodyear Wrangler MT/R

Manufacturer: Goodyear

Product: Goodyear MT/R

Price: $169 (31×10.5×15) - $187 (33×12.5×15) at TireRack.com

The Good:

These are great offroad tires.  Big, knobby, steel reinforced sidewalls, and just plain good looking.  The Goodyear MT/R can really handle well offroad and given the steel reinforced sidewalls, they make you feel a little more comfortable that you won’t puncture that unfixable spot.  These perform amazing in mud and snow conditions.  They give your vehicle an amazing stance and really do look great.  On road you can expect good handling in adverse weather conditions be it rain, snow, or just every day driving.

The Bad:

If you thought you got poor gas mileage before, prepare to start spending some extra bucks at the pump every month with these.  If you’ve been using normal All-Terrain tires, you’ll most likely see a drop of a couple MPG after you throw these on.  They are a bit pricey when compared to your general All Terrain tires.  They wear a bit faster than I’d like as well.  The other thing to note is the road noise.  The road noise is noticabley louder.  So if you’re already go a noisy ride, prepare for just a bit more.

The Bottom Line:

If your Jeep Cherokee doesn’t see much off the road, you may want to consider purchasing some All Terrain tires.  If you want to be able to go anywhere and don’t mind the reduced MPG, the noise, and the cost then this is the tire for you.  It is absolutely a great performer off the road.  snowwrangler

I put a pair of 31×10.5×15’s on my ‘91 Two-Door Jeep XJ and these did absolutely amazing.  I was able to easily drive through 3 feet of snow and plow through large snow drifts without ever getting stuck.  Off the road in muddy conditions, these did just great.  Very little slippage and great grip.

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BreathingOne of the best things you can do for your XJ to increase horsepower and MPG is to allow your XJ to breathe better. Yes, your Jeep breathes. It breathes in through your air-box and out through your exhaust. You can help your Cherokee breathe by removing restrictions in the flow of this breathing process.

So, how do you remove restrictions? First things first, check your catalytic converter.  If this is going bad or broken then you’re already losing horsepower, wasting gas, and hurting your engine.

You can tell your catalytic converter is bad if:

  1. You’ve recently failed an emissions test.
  2. You’ve had a significant decrease in gas mileage.
  3. You’ve had a significant loss in horsepower, up hills, on the freeway.
  4. It feels rough during idle.
  5. You’ve experienced it stalling at idle.

If you’ve experienced any of these things you need to have an exhaust back-pressure check.

Performance Catalytic Converters

catconPrice: $100-$150

Performance Gains: 5-10 HP Increase

Websites like SummitRacing.com sell “performance” or “high flow” catalytic converters.  These have better flow than OEM catalytic converters and will reduce back-pressure throughout the engine.  Reduced back-pressure means increased flow and increased flow means more horsepower.  Upgrading your catalytic converter is a great way to help your Cherokee breathe better.

High Flow and Performance Mufflers

flowmaster_40_seriesPrice: $100-$450 Full Exhaust Systems

Performance Gains: 7-15% Increase HP

A great way to increase your vehicles “breathability” is to replace your OEM muffler.  OEM mufflers are designed to decrease sound more than they are to make sure your Cherokee is running at top performance.  You can purchase just a muffler or an entire exhaust system that contains a muffler, tail piping, tips, and hanging brackets.  The systems make replacing your exhaust a cinch and can be done in a matter of hours.   And again, this will reduce back-flow, increasing horsepower, and adding a great sound to your XJ.

Air Intake

Price: $30-250

Performance Gain: 5-10 HPxjairintake

Last but not least is your air intake.  What good is reducing all the backpressure if your not getting enough air into the engine in the first place.  Replacing your air intake with an open cone and tube design like the one on the right can take less than 10 minutes and give you a gain of 5-10 horsepower.

The stock box is restrictive and doesn’t allow the engine to get as much air as an aftermarket design.  Going with a company like K&N for your filter allows you to wash your air filter as well.  No more purchasing air filters every time you go off roading only to clog up your air filter with horsepower destroying dust and mud.  Check out Rustys Airtube it’s only$29.95 + $29.95 for the K&N Air Filter.

If you plan on going in some deep puddles, snorkels are also available.

All in All

Total Pricing:

  1. XJ Cat-Back Exhaust $150
  2. XJ Cat-Converter $100
  3. Air Intake $100
  4. Total Price: $350     Increased Horsepower: ~30 HP

Bottom line is reducing restrictive OEM parts and replacing them with aftermarket performance parts cannot only give you performance increases, but significantly increase your gas mileage as well.

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eBay can be a great place to pick up off road gear for your Jeep Cherokee / XJ, but buyer beware. eBay can be the best place or a very dangerous place to pick up gear on the cheap. Here’s a quick guide on what deals will make you feel like a genius for getting and the shams that will leave something to be desired.


Top Buys From eBay for the Jeep Cherokee / XJ

Cup holder for 1984 - 1996 Jeep Cherokee / XJ

Price: $10-$15
Link: eBay Search for Jeep XJ Cup Holder
Bottom Line: Good Deal

We all know it and we all loathe it. The 1984-1996 Jeep Cherokee lacked receptacles for which to place your beverages, be it coffee, soda, or whatever. If you have a 1984-1996 Jeep Cherokee, you need cup holders for the front seats. There are a couple sellers on eBay who have auctions up or have them in their store. They go for about $10-$15 + shipping. They use the screws you already have in your center console in order to mount it right above your emergency brake. A definite good buy from eBay.

Brand Name Lift Kits


Price: Varies
Link: Search eBay for Brand Names
Bottom Line: Good deal if you check prices on other sites

If you’re looking for a brand name lift kit like Rough Country, SuperLift, or Rubicon; eBay can be a great place to find a deal. However, do your homework, check other sites for prices to make sure you are getting a good deal. If you can get a good deal, you can verify the seller’s reputation and have eBay to back you up if there’s a dispute on the item.

Worst Buys From eBay for the Jeep Cherokee / XJ

Performance Chips

Price: $20-$100
Bottom Line: Stay Clear of this Scam

Wow, I honestly can’t even believe eBay still allows these to be sold. These are probably the biggest rip off in the history of the world. A quick eBay search of “Jeep Cherokee Performance Chip” will reveal results like, “+45 HP! 15 MPG” “100 HP 75MPG” all of which are completely false claims. They run anywhere from $20 all the way to $100 and really consist of nothing more than a resistor in a Radio Shack project box that has wires that run between your ECU and sensors in your car.

Here’s how they “work”: They place a resistor between sensors in your car and your ECU tricking the computer on your car thinking it’s either running too lean (increased gas, “increased horsepower”) or to rich (less fuel, “increased mpg”). Bottom line is these things do not do what they say they do and this is just a plan scam.

Off Brand Budget Lifts

Price: Varies
Bottom Line: Buyer Beware, quality is in question

I won’t even show a picture for these as I don’t want to anger the companies that sell them. However, be sure and stay clear of off brand budget lifts. They are usually not the best quality and that is the last thing you want to put on your XJ. You’ll either end up with a ride that is way too rough or you’ll end up breaking on the trail. Do yourself a favor and save up for a better kit.

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Company Summary

Website: http://www.rustysoffroad.com
Company: Rusty’s Offroad
Their services: Sells great Off Road gear for just about all Jeeps

The good:
Easy navigation, good selection, good website design, easy to find information, well organized, good product pricing, has lift kit packages (wheels, tires, lift kit)

The bad:
High shipping cost, needs more product pictures, don’t find out shipping until you’ve almost completely checked out

The bottom line:
Rusty’s Offroad is an awesome place to find great off road gear for any year XJ. The also carry a great selection for other Jeep Model’s including, JK, TJ, WJ, and others. They seem to have really good prices, however the pricing lends itself to the overpriced side. So, although their prices are cheaper than say Rubicon Express, after shipping it might take a bigger hit to your wallet. They have
a great gallery of “Customer Rigs” that may help give you ideas and show you what their products look like on Jeeps like yours. All in all, a decent place to find gear.

Screen Shots From Rustys Offroad

Performance PackLift KitsCustomer Rigs

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