Protege_Speed
Member
- :
- 2002.5 ES Auto with MSP Conversion
There are some days that my car really pulls and the shift points are high in the rpm and there are days when my car is really sluggish and the shift points are lower in the rpm. I have also had days when the car doesn't pull as quick but it still shifts high in the rpm. You can also here a difference in the engine sound. On the good days, the engine sounds smooth and on the bad days, it sounds rough. My question is, how can I make the car so that it is consistent and the power is solid? What do you think the problem is? Is it A/F ratio? Should I get a A/F guage? Would a EMS like a MPI tuner help? I am not boosted and I also have an auto. All info is appreciated.