[Toms2005G6GT]

Heres a couple of websites that sell ECU's for the G6 and has no top speed limiter and no rev limiter, both removed >> http://www.whiteautoandmedia.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=38&category_id=17&option=com_virtuemart&Itemid=54 , if it doesnt work go to the main page http://www.whiteautoandmedia.com, and this is also another site >> http://www.zzperformance.com/g6/products.php?id=148

 

[Toms2005G6GT]

Im looking into it to see if it does void the warranty, but im pretty positive it wont, casue this ECU on the website is the same as your stock ECU and they program it with your V.I.N. Number so they will both be identical, the only difference is that the limiters are both removed and has a couple of tweaks. What i would do is buy a new ECU from http://www.whiteautoandmedia.com so at least if you want to you can put your stock ECU back in. its better to buy a new one than sending your stock ECU in just to play it safe.