Is this update TCM supported for G8 GT?

TCM1 TCM! TCM!!

ummmm, they don't have my car listed...

OK,

So maybe I should try 93 oct tune here in Reno, NV at 5000' elevation?? Our highest available is also 91 at the gas station...

lol

Do you WOT from a dead stop?

You don't have to. You can go from any speed. I usually slow down to 40 mph on a highway and go WOT for several seconds. I also make sure traffics are clear around you. The best time would be early morning or late night and where cops cannot hide... LOL :lol:

I have heard/read somewhere online that after installing the modified tune, we should unplug the negative battery plug in order to reset old data that ECM learned. Do we do that every time we tune?

That sucks.

So what is the potential problem when Onstar disrupts the data upload? Freezing up the Predator? Force detune? Will I get the problem which I will need a password from your telephone support?

We did not test on a GXP here in the shop, we used a MonteSS.
The GXP has its own unique fuse ...

Thank you, Mike.

But, do you know who developed the GXP(LS4) version? If you can find him, then he knows which fuse to disconnect?

Thanks,
Yui


I'm not 100% sure here....I believe there is a separate fuse for the OnStar on these cars.
Disable the OnStar and do not worry about the others ...

Well....

When I disconnect OnStar fuse, it will actually turn off data link connection too. So, predator won't turn on neither.

What else do I do to turn off the Onstar?

What I did was disconnect radio fuse. Then I saw onstar power indicator was red, so I thought it is off.

Below is a fuse panel ...

My area do not have Mobil, but Exxon. Same brand, right?

And Amoco/BP gas is sold at AM/PM convenience store!

I just tried on my work computer which has a serial port. It worked fine...

Mystery..... my home computer.... what else do I have to do.....?

Yes we have, most new pc's and laptops do not come with one anymore. You just have to make sure you set it to use the correct COM port.

Where do I set the correct port on the Data Viewer?

I have downloaded tune to my predator, so I know which port I am using, but I cannot find port selection on ...

I followed the instruction, but it is not downloading my log.

I will try my work computer, which has a serial port tomorrow, but have you tested on a computer that does not have a serial port???