That is the system I have on my current V8 Ghia and yes, there is more power and better economy on gas. I am surprised they didn't install that system on your car as it has been around for at least 4 years. The new system will cost me a bit over $3000 after my rebate, but as I am packaging it over five years with the car the cost is no problem! :-) Thanks for all the info guys. The G6ET seems to get better economy than my old Ghia , AND is faster...