manjarrez467

has any of you guys used this cheap ebay supposely horsepower gainer and fuel economy

they are called performance ships but they are way to cheap lol..

may they do work has anyone try them ??????

TheJerm

They do nothing, some searching will tell you that.

OnlyInMyXJ22

x2

stereodesigner

x3

There is no chip out there worth buying for the 4.0s
save your money, fill your gas tank up with it or something

xj_maniac_newb

Very untrue. I drove a 05 wrangler (with 4.0 manual 6 speed) with a hypertech and then drove it with it back to stock. The difference was unbelieveable. We outran a stock mustang (jeeps on 33s) off the line then down the road. Took the hypertech off, and the jeep feels gutless. The jeep would literally pin you in the seat before and now it wont even come close to doing so.

Just my experience and 0.02 cents..


And no, dont get that chip from ebay. I'd bet it does more harm than good if it does anything at all

manjarrez467

Tankssss for the help

2trackin

All those eBay "chips" are is usually a resistor in place of your air intake temp sensor. Making the computer think that cooler "more dense" air is coming in. There for, supplying a different amount of fuel to correct the air/fuel ratio. Id say, does more harm than good.
I hypertech type programmer may do a little bit. Changing shift points, and modifying a few other engine management things. Most likely not worth that even.
Id say the only reason for any computer mods would be when upgrading engine internals.

opake

x2 on not buying any ebay chip, but even the Hypertech programmers for XJs wont do much. The 05 Wrangler PCMs have many more parameters open to adjustment as compared to our XJ PCMs that are more or less locked down.

jmm0122

If you order one you will get a plastic box with a red wire and a black wiring sticking out of it. They are good for well nothing, not even a paperweight.

xj_maniac_newb

Guess thats why they're not used as much. If my xj could have the power that wrangler had... id cream my pants lol

TheJerm

regearing helps alot, Chips dont add 50hp they maybe add 10hp or change the way the trans shifted which make it feel quicker. I use to roast mustangs and imports all the time with ax15, 3.55 gears (stock is 3.07), stock tires and some bolt on's. It was alot of fun and i miss not caring about tires while leaving 2 black strips behind me but then i got 33's. All the fun i have now is going slow