RE: PCM TUNING

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RE: PCM TUNING

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RE: PCM TUNING - 10/22/2007 8:08:21 AM

HummerGuy

Posts: 6584
Status: offline

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.

(in reply to Bennersj)

Post #: 16

RE: PCM TUNING - 10/22/2007 12:04:47 PM

kelly@pcmforless

Posts: 98
Joined: 9/5/2006
Status: offline

quote:

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.

To be fair in your comparison, he has a manual, and you have an automatic. In general you will always see the manuals putting out more impressive gas mileage

(in reply to Bennersj)

Post #: 17

RE: PCM TUNING - 10/22/2007 6:37:48 PM

GorillaH2

Posts: 1411
Joined: 7/30/2007
Status: offline

Kelly, when are you going to have a pcmforless for the H2 because I would be interested

(in reply to kelly@pcmforless)

Post #: 18

RE: PCM TUNING - 10/23/2007 4:20:14 AM

HUMMER DRIVER

Posts: 447
Joined: 3/12/2007
Status: offline

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.

_____________________________

2007 H3 Black/Chrome Package , SS Nerf Bars, Roof Rack, MagnaFlow, Towing Kit, HUMMER PinStriping. K&N , PCM , SS Brushguard, Backup Camera, 34" Trxus M/T & ProComp Rims.

(in reply to GorillaH2)

Post #: 19

RE: PCM TUNING - 10/23/2007 8:06:55 AM

kelly@pcmforless

Posts: 98
Joined: 9/5/2006
Status: offline

quote:

ORIGINAL: GorillaH2

Kelly, when are you going to have a pcmforless for the H2 because I would be interested

Hey Gorilla, my partner Bryan handles the H2's. His number is 724-349-4431, or programmer@pcmforless.com

(in reply to GorillaH2)

Post #: 20

RE: PCM TUNING - 10/23/2007 8:22:39 AM

Gunner_45

Posts: 1879
Joined: 12/14/2006
From: North Central Texas
Status: offline

quote:

ORIGINAL: HUMMER DRIVER

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.

On my old '06, the tires and the leveling were good for a 3 to 4 mpg hit ! ! !

The PCM tune on the totally stock '06 did seem to help, but I traded it in on the '07 before
I realized the full benefit of the tune.........

On the '07, with just the tires.....I'm @ 14 to 15 mpg on a good tank staying @ 65 mph mostly highway...

It just rolled over 2000 miles and I've only checked a few tanks. It's been in the shop more than it's been on the road,
so I really haven't had more than 2 consecutive tanks to compare...

_____________________________

ROTM –September 2007
2007 Adventure Pkg, Katzkin leather, CAI, SG II
Rock Rails, SMA b-guard, KC Lites, ProComp 6079’s W/Simulocks, Swamper TrXus MT’s