Do performance chips work?

kypiper01
Sat, 15 Jan 2011 02:57:05 +0000
Maintenance/Repairs

I found a performance chip for my 2005 Nissan Maxima SE. It states an increase in fuel efficiency of 4-7mpg. Do these chips work and if so can they damage the ECU (Electronic Control Unit?

13 posts - 10 participants