Just drove the car to the store and it is acting crazy. The car is sputtering alot around 4000 rpms. I think I heard some backfiring as well. I ran the car alittle low on gas. When I started it it ran fine for about a mile and then started sputtering. I immediately filled the car with gas it took 14.9 gallons so it wasnt totally empty. The car has 2000 mile on it now. So the fuel tank should be pretty clean. I am getting no error codes at all. I recently put a evo v flow air cleaner on but that was two weeks ago. I say this because some have said something about the mass air flow sensor and the oiling of the K&n filter. Mine looks pretty dry not sure the dealer even oiled it. I am lost on this guys.

I thought about adding a fuel injector treatment. Any Suggestions?

 

Did you do any ECU work? Did you get water from washing it in the Evo intake?

 

When something like this occurs and no codes are showing get the car to any nearby dealer so they can witness the issue as it happens...if it's too late for that still bring it in. I would not recommend the fuel injection treatment as it is not Porsche approved. I am also not an advocate of any mods that may even remotely cause warranty issues as these cars are VERY expensive to repair.

 

It was a gremlin. I think it was bad gas. I let it idle for a while and burn the new gas and it is running fine again. very weird. It seems ok now.

 

Golfman, since we are both local...what gas was the bad gas?
thanks, Mike

 

Not sure if the gas was bad or if I ran it to low before refill and grabbed something off the bottom of the tank. I usually fill up at hess. So I think that is were it was from.