Hello, Does anybody have the extreme package by Xtremeflow on their H2. Iam thinking about buying it, any info would be great...


Thanks Joe.

I have had my package on for a while now. I installed itr first (exhaust, cold air intake and power flash programmer) had it on a few months then went to a Whipple supercharger because I wanted more. Once you get more power and get used to it you want more.

I saw about 1.9 mpg increase before the supercharger and it didn't really change after the supercharger.

It has a nice sound and it wasn't loud inside the vehicle.

Hope this helps..


Whipplecharged :cheers

Whipplecharged
Did you have to use high test after using the power flash programmer or did regular still work O.K.

Thanks for any info :thumbs :seeya

I used reg. and have no problem.


Whipplecharged :cheers

Whipplecharge thanks for the info. My main thing is noise in the truck from the exhaust. I just sold a worked Z06 vet for the H2. I guess Iam getting old.


Thanks Joe

We never get old at heart.....

Why grow up anyways.

The Xtremeflow has a nic eaggressive tone outside and doesn't change much at all inside. I think you will enjoy it. I am..


Whipplecharged

I bought the xtreme package (cold air, exhaust, proflash). All is well and nice except that I can't flash my H2. All of the proflash steps went well except for the final step where the proflash is trying to update the flash memory on my H2 and came up with "flash error". I tried this 5 times with the same problem.

Can anyone help?

Thanks,

XE1

Hey X, make sure the ign, is on, the point before it engages the starter.

AZ,

The ignition is on. The Flashpro read the vin and talked to the H2 properly until the very last step where it tries to update the new flash changes to the H2. That's where it failed.

Thanks anyway... I'll call the dealer and see if they can help.

XE1

It might be ON STAR, they say it has to be disabled in some cases cause it to fail. Just a thought, good luck and I am sure you will get it. I use the Diablo Pretator, and they mention the ON STAR problem. You will like the change in the truck with the new flash. Let me know the fix you find.

Flashed mine last night. Crossed my fingers that it would work.


All went fine!!! Service enging light was on for a while, but I turned the vehicle off cam back about 2hrs later to redo the program and the light was gone...

Programmed for economy, just to see how much gas milage increase it would get..

Hummer happening this weekend will program for performance...

I did pull the 4 fuses under the hood proir to flashing..

Jerry