Anybody got tune file for 4.0 Jeep Grand Cherokee 04 running really lean
Printable View
Anybody got tune file for 4.0 Jeep Grand Cherokee 04 running really lean
I've been looking around because I was thinking about what it would take to turbo a 4.0, and they have nothing for the 02-04 4.0L JGC. Must be a tough nut to crack. Or you can try your luck with a 4.7L and have all the valve seats fallout on ya at the worst time possible.
IM pretty sure you can not program the 4.0 jeep ecu
why?
You most defiantly can tune the 4.0, both jtec and jtec+ ecu's but its needs to be a mpvi2 the new mpvi3 doesnt support jtec "yet"