sirben711
Well-Known Member
- Thread starter
- #1
I have been dealing with this issue with the i4... well since I bought it. But I don't believe that this is an engine issue per say. Randomly when accelerating from a stop out of a corner, the acceleration "lags" engine revs go up (slower than normal) and there is just no feeling of power.
I THINK it is the ecu pulling timing or limiting fuel when accelerating out of the corner. But even when I turn Advancetrac off this same situation will still randomly occur. (Yes, I often drive with Advancetrac off - I miss the old 90's Mustangs lack of grip
) But I don't know WHY its happening because I am not even close to pushing what this car can do in these corners. There is no tire squealing or chirping or anything like that.
For example, when leaving work the last 4 days - when accelerating out of this one specific right hand turn it feels like there is so much drag on the car and it doesn't want to accelerate. Revs build slowly (I have not checked boost pressure when this occurs yet) and the car feels like its going nowhere - the transmission also seems to shift slowly as well. BUT during the next righthand stop I take, the car accelerates normally ALMOST every single time.
I will also say, my last s550 mustang was a v6 and these symptoms only happened twice throughout my ownership.
So what do you think this is? Its pretty annoying because the car isn't doing what I am expecting - which in the right circumstance could be dangerous.
I THINK it is the ecu pulling timing or limiting fuel when accelerating out of the corner. But even when I turn Advancetrac off this same situation will still randomly occur. (Yes, I often drive with Advancetrac off - I miss the old 90's Mustangs lack of grip
) But I don't know WHY its happening because I am not even close to pushing what this car can do in these corners. There is no tire squealing or chirping or anything like that.For example, when leaving work the last 4 days - when accelerating out of this one specific right hand turn it feels like there is so much drag on the car and it doesn't want to accelerate. Revs build slowly (I have not checked boost pressure when this occurs yet) and the car feels like its going nowhere - the transmission also seems to shift slowly as well. BUT during the next righthand stop I take, the car accelerates normally ALMOST every single time.
I will also say, my last s550 mustang was a v6 and these symptoms only happened twice throughout my ownership.
So what do you think this is? Its pretty annoying because the car isn't doing what I am expecting - which in the right circumstance could be dangerous.
Sponsored
Last edited:
