WARNING:
When making the decision to purchase performance chip for your car we recommend that you carefully consider your options. We recommend that you be wary of:
The mod chip – this is simply a cheaply priced, small resistor fitted to a temperature sensor in order to trick the system into thinking that it has a lower? Engine temperature than it really does. In turn the engine management system makes adjustments to the fuel system accordingly. In most cases this adjustment is to richen the system or to lean it. This is a cheap and nasty shortcut, it does not work correctly and is dangerous to your engine. Buyers should not trust any modification that tricks the engine management system rather than programming the parameters correctly.
The eprom – these are cheap IC units that are available in any hobby store. An eprom is recognisable as it comes without a carrier or a cover and needs to be re-soldered into your standard chip. They are reflashed using mostly copied programs that are freely available to download from the internet. In most cases these are copied programs that are generic to a wide range of models rather then being specifically programmed to suit a particular model. As one chip does not suit a wide range of models but must be programmed specifically according to the model, we recommend that buyers again be careful if planning to make such a purchase. If a seller is selling many eproms for many different makes/models then you can be fairly certain these are the copied programs to which we are referring. The cost and difficulty of de-soldering your current eprom and ther re-soldering the new eprom will usually end up costing more than to simply buy a custom performance chip and plug it in. One must also consider that the risk of damage to your car's computer by installing the eprom is very high. Buyers will naturally find that the stated power gains will not be achieved. In short, buyers will get what they pay for - very little or even worse, costly repair bills down the track.