i have an 08 G8 GT. i hear it has a speed limiter but i havent hit it yet so im not sure. so if any one does it have and 1 and if it does how do i go about removing the speed limiter.

When ever Diablo comes out with a turner for the G8GT that will do it.

thank you i will b lookin for that im am curious to to how fast it will then go cause i was shiftin throught the gears and hit 138 in 4th

I did test too and at 138 it cut off and still on 4th gear (shame)
and the dealer dosen't want to remove it, you have to bye a supership to go over

There are a lot of companys that have ECM tunes for the G8 that will get rid of the speed limter and give you a lot more power. :Racing:

Some of the Venders on this site have good tunes look at there web sites and find the one that will work for you.