Re: 1999 Jeep grand Cherokee laredo 6 cyl.
I was just reading the service manual and it stated that the MAP voltage at sealevel (29.92 in Hg) should be around 4.5 V (it doesn't state it, but that should be with engine not running i believe)
JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks /
Pirelli Scorpion ATR 245/65/17/
Transgo reprogramming shiftkit.