Chips upgrade the computer to increase the boost, remap the fuel, etc....All to improve the cars performance. In the 1.8T, the computer has to be taken out and the chip inserted before putting it back in. When I purchased the Chip, I was given instructions on how to remove the computer and sent it out to be upgraded. There is such a big increase in power that you feel immediately.
__________________
2005 Crossfire SRT-6 - Custom CAI, LET Motorsports ECU Tune,
Code-3 SuperCharger Pulley, Magnaflow Exhaust, Modified Thermostat.
http://www.cardomain.com/ride/3097816