Now using the MAP sensor..
- Thread starter LinuxRacr
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Not if you are tuning right. You would set the load fuel 1x16 to not add fuel under light loads. Also you need to calibrate the sensors. If you max out the airflow with your MAF you need a bigger one. Going to a three bar MAP will not get you more air.Kooldino said:
Air flow is air flow, that is what the MAF is reading. If you do not know how to tune right with the MAF and you need to use the MAP, that is fine. As long as you get the results you want.
Something else is wrong with my car... It still leans out. I need to check some wiring, and sensors. Every since I hooked the MAF back to stock, I keep throwing the same CEL code: P0171 (Bank one too lean), even though the wideband says I'm at 14's A/F ratio at idle, or cruising. WTF??
Thats right what Nick said. If you keep the 1X16 map with 1.00's you will have problems with tunning.
Now I made mine in a way that it pulls fuel out, using big numbers in the 8X16 and big number in the Fuel Calibration, and start with .20 on the 1X16, then as it reaches 0vac, I feel the motor stronger and stronger, then the first psi is handled by the stock injectors, the rest is on the extra injectors.
Now I made mine in a way that it pulls fuel out, using big numbers in the 8X16 and big number in the Fuel Calibration, and start with .20 on the 1X16, then as it reaches 0vac, I feel the motor stronger and stronger, then the first psi is handled by the stock injectors, the rest is on the extra injectors.
Cars suck, and the more power you try to make the harder it is to ge there.LinuxRacr said:
I see again that it was not do to the MPI Tuner or they way we feel it should be set up and tuned. I know it gets old for some people to here the same thing all of the time from me. But outside of the few bad TMs it has always come down to something wrong with the car. Again aside for the few bad TMs it has been 100% of the time that the MPI Tuner was not the problem. When someone is having a problem tuning his car, it has always come back to something being wrong with they car. I know that a few people did not take the time to find and fix their car problems and sold the MPI Tuner. I still see one who is still posting about his problem with the car.
The point is, it does not matter what EMS system or type of fuel system anyone has. If things are not 100% you will have problem, some like Pat are honest about their car problem and are trying to fix them. Some just post and b****.
Forums like this are like a double edged sword. Some info is good and some info is s***. I see threads from tuning cars to engine building. I see alot of post's on how to do things from people who may mean well, but just do not know what the -uck they are talking about. Their info comes from reading a book, seeing it on TV and sometimes from people who just do not know what they are doing. Building cars cost big money, make sure you are getting advice from a real Tuner or Engine builder. Some should not give up their day jobs.
I did. But I still ran into the issue in certain cases. That's the problem with a MAF.MPNick said:
I also tried fine tuning it in the fuel map, but since the resolution on the X scale of the fuel map isn't high enough (ie, there's too big of a gap between TPS percentages), I had some instances where I could be say 21% on the throttle or 30% on the throttle (this is just an estimate), and still be in the same cell on the fuel map. The end result, 30% throttle would build boost and use the extra fuel I got, but 21% would not, and it would studder and run too rich. For it to work properly with the MAF setup, you'd need a finer resolution.
They're calibrated within 1/100 of a volt.
No, but it will tell me how much boost I'm running and it will make it more drivable and easier to tune.
I know how to MAF tune, and I've done it with other EM systems that are more well set up to do so without issues. To fine tune with a MAF, you need more resolution on the fuel map than the SMT-6 has. Other EM systems have very high resoultion maps for a reason.
You're kidding me, right? His car is RUNNING, and RUNNING WELL (off of boost, anyway). He's running 14's in the AFR off of boost. He just has a CEL. It's still RUNNING smoother than it did when he didn't have the MAP sensor. Granted he may still have issues somewhere, but at least it's more drivable even in that condition.MPNick said:
So what's with the limitations of these fuel computers? I'm just a little curious as to why they would limit the resolution on any of them. Is it just that the companies that build the units want to save a few pennies by buying EEPROMs that can only handle so much memory for maps? Or is it a sensor issue? Is the output of a MAF not precise enough to have less than a 0.3125 volt split (1/16th of 5V)? Personally, I'd like to have at least 32x32 tables, but 64x64 would be great. Ideally the tables would be scalable and interpolated and give more resolution where needed and less where it's not. I'll get off my soap box now...
Yes he still has issues, are you a nuts.Kooldino said:
How in hell is he going to tune around problems? He needs to fix his car. You just do not get it, do you. If the car is not right you cannot tune it right. So what you are trying to prove is you way is better for cars that are not running right. Your way is better? Please keep making posts like this, you are proving me right more and more.
No you do not know how to tune the stock MAF, thats why you are not doing it that way. What the hell do you not understand? People are tuning the stock MAF everyday on the forum. You could not because you do not know what you are doing. Are these people thinking they are tuning the MAF, but they are not? You keep making post's about why you cannot do it but you just do not understand. Mazda Protge forum members are tuning the stcok and my aftermarkt MAF all day long. You cannot say it cannot be done it is being done. Stop saying it cannot be done it is, every ******* day.Kooldino said:
This is why you do not know what the hell you are talking about. Other ems system like standalones need the have more resoultions, because are running the whole thing. We are a piggyback, we do not need to do what the standalones need to do.
Yes, I am a nuts.MPNick said:
Then what's wrong with his car? Wasn't he running ok when he had an FMU, before he put the MPI in?
I agree.
Again, my way is just simpler, and people have less problems with the actual tuning. That's all.
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