Notes:
For VW Golf IV, Jetta IV with 2.0L 8V. 91 octane or higher fuel must be used with this chip. Factory chip is soldered on to the circuit board, so your ECU must be reprogrammed at NEUSPEED's California headquarters. Upon placing your order, NEUSPEED will send you an ECU removal and pre-paid shipping kit. Once you remove your ECU and send it out via UPS, the total turnaround time is 3-4 working days.