performance chip for car?

For you car guys, what is this exactly, and does it really work?

eBay Motors: PERFORMANCE CHIP FORD FUSION 2008 2009 GAS SAVER (item 260303240670 end time Oct-26-08 21:22:17 PDT) (http://cgi.ebay.com/ebaymotors/Parts-Accessories___PERFORMANCE-CHIP-FORD-FUSION-2008-2009-GAS-SAVER_W0QQitemZ260303240670QQddnZPartsQ20Q26Q20Acc essoriesQQddiZ2811QQcmdZViewItem?hash=item26030324 0670&_trksid=p4506.c0.m245&_trkparms=72%3A713|65%3A12|39%3A1|240%3A1318)

lol...increase MPG up to 30%!!! I wonder why Ford doesn't pre-install these chips in their car. Sounds scammy and a first class ticket to fucking up your car. Stay away.

lol...increase MPG up to 30%!!! I wonder why Ford doesn't pre-install these chips in their car. Sounds scammy and a first class ticket to fucking up your car. Stay away.

My thoughts exactly. If it were so easy to get better mileage I think it'd be already in the car. I am logically confused how it both increases horsepower and mileage. Those two generally work against each other.

I'm sure the chip on ebay is bogus, but what about something like this?

http://www.streetbeatcustoms.com/Surge-Engineering/Performance-Chips/Surge-Performance-Chip/17558/

I'm sure the chip on ebay is bogus, but what about something like this?

Surge Performance Chip by Surge Engineering (http://www.streetbeatcustoms.com/Surge-Engineering/Performance-Chips/Surge-Performance-Chip/17558/)

I would only go with the Jet performance chips. Those ones on ebay are seriously just a resistor with a heat shrink tube on it. A buddy of mine got one of those and I told him that's all it would be. It was hilarious when he opened the package.

Yeah, as others have said, don't do it. It won't help.

The only chip worthy of purchase are those that allow you to remove speed cap on your car. What's the real value of these chips? They won't improve your gas mileage and they can't help you get more out of hardware that is at optimal level without damaging the hardware.

You know these chips will void you car warranty. Ok, just take it out before you take it in to have it work on. Ops, their computer can tell if you have used one.

The only chip worthy of purchase are those that allow you to remove speed cap on your car. What's the real value of these chips? They won't improve your gas mileage and they can't help you get more out of hardware that is at optimal level without damaging the hardware.

Some units are very effective. The biggest gains are with diesel engines, though, where with the right setup, one can gain tremendous amounts of power and torque by simply plugging in a control unit and turning a knob on the dash. Many times, upwards of 100hp can be gained easily. Also, with diesels, a lot of times fuel economy will also be improved.

Gasoline engines don't normally provide these types of gains with such simple additions.

do yo ulike having your check engine light on all the time? Basically that is what will happen it will mess up your OBD or in your case your OBD II.