Re: BA I6 splutter
I had the same/similar problem,
I know if I put Premium petrol in (95-98 RON), it will splutter and stall and carry on.. run like a bugga.
Put normal 91 ron back in, sweet no worries mate.. awesome.
my brothers AU has exactly the same problem, put Premium petrol in, it sometimes stalls at the lights (as you got to pull up) and idles rough and erratic.
that being said, my coil failed at 20 000 k's this was also causing similar problems, and then also my Manifold/exhaust got a hole in it, and made the car not run right (23 litres per 100 k's !! GRRR) but all fixed under warranty so no big issue.
I don't know if any of those are you problem,
but if your running premium fuel, I suggest switch back to normal fuel.
this might help, always run good brand fuel though, steer clear of the woolies and el cheapo stuff. It's not about the RON (octane) it's about the purity.