Is this an actual 'hardware' upgrade or just a software upgrade? I know it says hardware but from the posts, it sounds as though it just updates the firmware.

If hardware is correct, are all of the guts updated with new hardware?

Thanks!

Was looking at buying a used U7195. I've read conflicting information on different message boards regarding the ability to turn off the O2 sensors after the cats on my '03 Avalanche 1500.

With the U7195 am I able to turn off those sensors or am I only able to tune them?

Also, the seller says the ...

06MonteSS wrote: #3 - you CAN disable the O2 codes for the sensors when you remove your cat's.

haha that was my next question. What if the cats are in but gutted? I'm assuming that makes no difference?

Disabling the codes, is that disabling the back o2 sensors or just hiding the codes?

Was looking at buying a used U7195. I've read conflicting information on different message boards regarding the ability to turn off the O2 sensors after the cats on my '03 Avalanche 1500.

With the U7195 am I able to turn off those sensors or am I only able to tune them?

Also, the seller says the ...

Was looking at buying a used U7195. I've read conflicting information on different message boards regarding the ability to turn off the O2 sensors after the cats on my '03 Avalanche 1500.

With the U7195 am I able to turn off those sensors or am I only able to tune them?

Also, the seller says the ...