Good chip?

[Northpole]

I am looking for a good tuning chip for my Mark VIII LSC 1995, I have already K/N and full open exhaust.

Found this one:

X3 Performance Chip with O2 Sensor Control

From:
http://www.engineperformancechip.co...3-performance-chip-with-o2-sensor-control-p-6

Anyone have a good experience with this one?
Can you recommend any other? Power vs fuel efficiency?

Thanks

 

[driller]

SCT - hands down.

 

[fastmark1993]

I'll sell you my sct chip it needs to be tuned for your car though since i don't own your car...