Devilspawn
Member
- :
- blue something
shell 93 all the time...right up the street from my house harford rd and 695
Stock dyno run with pinging, help!
- Thread starter mSHOCKERp
- Start date
They did back off the gas on the last few runs because of the pinging, so the numbers were a little low. Looks like I'll run the 94 for a few tanks, go back and try again. If it still does it, I'll try my hand at the dealer but what can they do to fix it if they even hear it?
Mike
Mike
exactly what i have been thinkin...there has been rumors of mazda puttin out a better flash that finally fixes the fuel and timing of the msp once and for all...but i guess we will see 
......im waitin for reviews on the corksport tuner....if it was around 500-600 i would be all over it...but at 825-875 im gonna have to wait for someone else to take the pluge before i do
......im waitin for reviews on the corksport tuner....if it was around 500-600 i would be all over it...but at 825-875 im gonna have to wait for someone else to take the pluge before i do ok i do not understand why everyone thinks that it is the gas that is causing the pinging. If you look at the dyno with the a/f you see that it is above 13 at the top of the rpm band and I am pretty sure you do not want to be above 12.2-3 with our cars that high in the rpm band and that is what is causing the pinging.
Switching fuels will not correct the lean problem. You are making good power because it is running so lean but that is not good for the engine. Your engine could be going boom because of this.
Switching fuels will not correct the lean problem. You are making good power because it is running so lean but that is not good for the engine. Your engine could be going boom because of this.
MazdaSpeed0020
Member
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- 2003 Black Mica MSP
Is there a fix for this, or is this just simply the fuel problem that all msp's have?jaymode said:
Matt
Most of the people who have watched the A/F ratio on the dyno have been rich almost all the way through the RPM range so I would guess there is something up with his car. There was a bit of a "leaner" dip for a split second post flash but for the most part it was still quite rich. Search and you will find all the comments on this topic you can stomach.MazdaSpeed0020 said:
LOL MIKE.....couldnt a weak gas....aka low octane lean out at those levels...i think i was hittin 13 or so a/f towards redline....we dunno if its a issue with the pcm or what.....but like i aid...im hopin mazda figures it out or ill probably get the corcksport setup
this is not normal. Our ecu normally dumps fuel after 3k rpm and at stock boost I think our a/f stays in the 11's. It just dumps fuel. His is apparently not doing that or something else is up because he is hitting 13's on stock boost, but whatever it is, it needs to be corrected.MazdaSpeed0020 said:
Ok, now I'm freaked out. How do I correct this? If it is the tuner computer then I'll get it ASAP, I don't want a huge bill for a blown engine that isn't my fault. Could a boost leak cause these symptoms? I haven't changed out any lines on my car and it has about 9k miles on it. Please keep helping me out on this, I guess it is more serious than I thought.jaymode said:
Mike
Wiggles6983
Member
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- 2003 Black Mica MSP
take it to the dealership, you couls try reseting your ECU, may help i dunno though.
Got_boost02
Member
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- Titanium MSP
would you be able to see the leaner ratio better with a simple a/f guage??
now that i think about that one i should shoot myself in the foot, stupid question(bang)
now that i think about that one i should shoot myself in the foot, stupid question(bang)
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I'm still wondering if there is a solution to this that I can just buy, because I know the dealership isn't going to to crap. They will best case scenario take it for a drive and not hear anything(because you can't) and if I tell them I had it dynoed and show them the charts, they will probably not like that. I'm just trying to get through this with a working car. Even if the dealer heard pinging or was ok with me showing them the dyno video/charts, is there anything they can do about it? Also, should we maybe move this into the Forced Induction forum? Maybe we could get more insight that what was already posted. Thanks.
Mike
Mike
Got boost02: The wideband assuming that is what was used if much better than a simple a/f gauge. if you notice they are all over the place sometimes.
mSHOCKERp: There could be a problem with some sensor such as the maf or something else that is causing it to run this lean, but it is definitely something that should be corrected. This is not normal and definitely needs to go to the dealership. You say you are stock, what is the problem with going to the dealer. Running you car on the dyno is no worse for it than putting it through its paces on the highway which you are certainly entitled to do with your car. Also even if nothing is corrected, having it documented will help the process of replacing the blown engine later go over smoothly and as quickly as possible.
I think investing in engine management is a good idea but with the way the car is running right now, it could be a waste of money and you may still blow the motor. The reason I saw this is because I believe that it is a maf or some other sensor, and if your new engine management uses the wrong readings, whats to stop it from also running lean if the sensor decides it wants to screw with the values it sends out more?
mSHOCKERp: There could be a problem with some sensor such as the maf or something else that is causing it to run this lean, but it is definitely something that should be corrected. This is not normal and definitely needs to go to the dealership. You say you are stock, what is the problem with going to the dealer. Running you car on the dyno is no worse for it than putting it through its paces on the highway which you are certainly entitled to do with your car. Also even if nothing is corrected, having it documented will help the process of replacing the blown engine later go over smoothly and as quickly as possible.
I think investing in engine management is a good idea but with the way the car is running right now, it could be a waste of money and you may still blow the motor. The reason I saw this is because I believe that it is a maf or some other sensor, and if your new engine management uses the wrong readings, whats to stop it from also running lean if the sensor decides it wants to screw with the values it sends out more?
