So I know that usually running the AC, especially on full blast, hinders performance to some point. In my case however I am running into the opposite issue?
When driving the car with the AC off, there seems to be some resistance and the second I press on the gas it shifts up and is really sluggish. On the other hand, when the AC is on and fan is running, usually with fan on 4 or higher, the car accelerates like a dream and feels as light as a feather. During both of these conditions the AF ratio and vacuum/boost are gauges are all reporting the same data. I am suspecting that this may be an issue with the alternator, AC compressor, or radiator for some reason, but I have not been able to find any post from my research on this type of issue or any possible causes to this. I am not usually social in any way but this issue has got me out of my comfort zone and asking for help on this forum because it has saved me in the past with other issues. I will list mods I have done which may be relevant.
Any help would be appreciated, anyone have any ideas of what could be causing this issue? Also, does this sound like it can be fixed with a tune since I have not gotten a custom tune?
2017 Mustang Ecoboost Premium Convertible
Mods:
JLT CAI
CP-E intercooler
MGK sparkplugs
JLT Oil separator<driver side>
Mishimoto off road downpipe
Muffler and resonator delete
Diablosport 93 octane tune
When driving the car with the AC off, there seems to be some resistance and the second I press on the gas it shifts up and is really sluggish. On the other hand, when the AC is on and fan is running, usually with fan on 4 or higher, the car accelerates like a dream and feels as light as a feather. During both of these conditions the AF ratio and vacuum/boost are gauges are all reporting the same data. I am suspecting that this may be an issue with the alternator, AC compressor, or radiator for some reason, but I have not been able to find any post from my research on this type of issue or any possible causes to this. I am not usually social in any way but this issue has got me out of my comfort zone and asking for help on this forum because it has saved me in the past with other issues. I will list mods I have done which may be relevant.
Any help would be appreciated, anyone have any ideas of what could be causing this issue? Also, does this sound like it can be fixed with a tune since I have not gotten a custom tune?
2017 Mustang Ecoboost Premium Convertible
Mods:
JLT CAI
CP-E intercooler
MGK sparkplugs
JLT Oil separator<driver side>
Mishimoto off road downpipe
Muffler and resonator delete
Diablosport 93 octane tune