Not much help
Actually I had the cold air intake and this chip installed at the same time. According to advertising, I should be getting about 4 gallon better MPG and 35-45 hp increase with both systems installed. I have had maybe a slight increase in MPG and a noticable but undetermined increase in HP. While it is impossible to differenciate between the performance effect of the intake and the chip, I suspect the two systems compliment each other. I am satisfied with the purchases and would do it again.
Unichip 350z with Pnp Harness
Chip did not work had car dynamometer before and after chip and lost 10Hp with chip.Unichip absolutely no help tried to say speed shop I was using did not know how to dyno (in business over 20years)said the settings on car were wrong even though in FAQ they say "unichip is a supplementary computer, which is programmed to contain optimum fuel and ignition adjustments"."The factory engine management control unit is not altered in any way" Save the aggravation and money. By the way I am 50 years old and this is the first time I ever complained about a product on line.