PCM TUNING
Sorry about that [&:]You have alot of modifications though, which most people say have caused their H3's mileage to go down. I am all stock, with the exception of a K&N air filter and the PCM upgrade. I was going to get a cat-back and CAI kit, but I'm starting to have second thoughts.
ORIGINAL: Bennersj
Thanks HummerGuy I was feeling pretty good about that. Getting about 15.5mpg. Thats not to good, thanks for bringing it to my attention.
Thanks HummerGuy I was feeling pretty good about that. Getting about 15.5mpg. Thats not to good, thanks for bringing it to my attention.

The catback (Magnaflow) didn't seem to hurt my mileage a bit. I was getting right at 20MPG highway until I put those big honkin Super Swampers on my ride.
I have a K&N intake, PCM update and dual exhaust. Like I said, mileage with stock wheels is great provided you obey the speed limit. Since going to the large tires I can tell you my mileage has suffered a great deal.. I don't plan to run the Swampers all the time. I will put my stockers on and click some hiway miles with them too.
I have a K&N intake, PCM update and dual exhaust. Like I said, mileage with stock wheels is great provided you obey the speed limit. Since going to the large tires I can tell you my mileage has suffered a great deal.. I don't plan to run the Swampers all the time. I will put my stockers on and click some hiway miles with them too.
ORIGINAL: GorillaH2
Kelly, when are you going to have a pcmforless for the H2 because I would be interested
Kelly, when are you going to have a pcmforless for the H2 because I would be interested



