Hi guys,
Dunno if this has been asked before but i have a TJ 3.5lt and when I reconnect my battery and the computer asks me what engine I have a 3.0 or 3.5, What would happen if I picked 3.0???

stick with 3.5 cause the 3.0 program sets it so it has a higher ignition timing... so this would make your timing out of wack which would result in poor perfomance... i think so anyway ;)

if you dont wanna risk, disconnect your battery and pick again

it will give you a wrong reading in fuel consumption

this just just a trip computer thing