I just recently purchased a used 03 Mazda Protege equipped with GT25R Turbocharger and using Haltech F10X Fuel Management ECU. Over a month of usage, I have noticed that the vehicle is very costly in gas. I did a full tank (91 octane) one day and filled about 45L (filled at low gas warning light) so I assume its a 50L gas tank. I reset the mileage/trip counter to 0 and drived the car normally (without activating the turbo and no A/C as well). So far I reached the half point of the gas indicator and I travelled around 150km, until I have 1/4 gas left and its around 270km. So I estimated that it will average around 300km per full tank. I compared to it to our 04 Honda Odysset and it turns out that the car consumes more gas. I can't believe that it averages at 16.67 L/100km. Seems unrealistic to me.
I did an observation and I noticed that the air/fuel ratio gauge always (most of the time) stays at 10.0. I did a research on A/F ratios and the ideal should be 12.7. The 10.0 mostly happens at idle (complete stop) or deceleration (slowing down with pressing the pedal). The A/F ratio would only increase if I press the pedal around 50% but only stays at 11-12 A/F ratio. I also noticed that when I start the car during mornings while its cold, the A/F ratio would go crazy over 14.0 at car start but goes back to around 10.0 -11.0 after how many minutes. One time in the morning, my engine went off at the stop light. Another observation I noticed is that during the car is stopped (waiting for the green light), I smell something unpleasant (but I cant describe the smell).
I need a lot of your opinions. Does the car needs retuning? If so, how do I do it? I have zero knowledge in tuning. The previous owner gave me the software before he sold the car but I have no contact for him now. The software is Halwinx 1.26. Is there certain procedures when tuning a car? Tuning at idle, while running? I completely have no idea. My main concern is the gas consumption. I thank you guys in advanced.
I did an observation and I noticed that the air/fuel ratio gauge always (most of the time) stays at 10.0. I did a research on A/F ratios and the ideal should be 12.7. The 10.0 mostly happens at idle (complete stop) or deceleration (slowing down with pressing the pedal). The A/F ratio would only increase if I press the pedal around 50% but only stays at 11-12 A/F ratio. I also noticed that when I start the car during mornings while its cold, the A/F ratio would go crazy over 14.0 at car start but goes back to around 10.0 -11.0 after how many minutes. One time in the morning, my engine went off at the stop light. Another observation I noticed is that during the car is stopped (waiting for the green light), I smell something unpleasant (but I cant describe the smell).
I need a lot of your opinions. Does the car needs retuning? If so, how do I do it? I have zero knowledge in tuning. The previous owner gave me the software before he sold the car but I have no contact for him now. The software is Halwinx 1.26. Is there certain procedures when tuning a car? Tuning at idle, while running? I completely have no idea. My main concern is the gas consumption. I thank you guys in advanced.
