"Blips" at full throttle?
Jan 14, 2009, 04:55 PM
#18
Every X I've driven has done this, and every X that I've driven after a tune doesn't do this. Unless the OP has a bad injector or something, a tune should fix it. Since the OP is still having issues with this, it would imply that something mechanically isn't right with the car. Could be injectors, spark plugs, who knows? But again, his issue is not widespread if that's the case, so calm down people. I swear, everytime there is a thread about a X with problems, all the arm chair lawyers come out of the woodwork telling the OP to sue. LMAO @ you guys.
Jan 14, 2009, 09:58 PM
#19
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Every X I've driven has done this, and every X that I've driven after a tune doesn't do this. Unless the OP has a bad injector or something, a tune should fix it. Since the OP is still having issues with this, it would imply that something mechanically isn't right with the car. Could be injectors, spark plugs, who knows? But again, his issue is not widespread if that's the case, so calm down people. I swear, everytime there is a thread about a X with problems, all the arm chair lawyers come out of the woodwork telling the OP to sue. LMAO @ you guys.
And even if a tune does fix it, what is it that was happening? Was any damage caused to the engine all the while it was happening before the tune?
Jan 14, 2009, 10:51 PM
#20
I've driven 4, and they all do it. I've driven 2 since being tuned, and the issue is completely gone. If you are still experiencing the issue after the base map, then perhaps your car is having more issues other than the tune. Most likely no, there has not been any real damage done to anything in your engine, and even if you have been getting detonation, it's probably very minor so I wouldn't worry about it.
What is most likely occuring is you are getting misfires, where there is so much fuel in the combustion chamber that it can't properly ignite, causing 1 or more cylinders to not actually fire completely. Again, if the tune didn't fix your issue, there is something else wrong. Most likely culprits are fouled out spark plugs or a bad injector. Mention this to the dealer, and have them look into it. It's sad, but mitsu dealers are clueless and half the time, you have to be the tech and tell them what to look for or they'll never find it. Let us know what occurs.
What is most likely occuring is you are getting misfires, where there is so much fuel in the combustion chamber that it can't properly ignite, causing 1 or more cylinders to not actually fire completely. Again, if the tune didn't fix your issue, there is something else wrong. Most likely culprits are fouled out spark plugs or a bad injector. Mention this to the dealer, and have them look into it. It's sad, but mitsu dealers are clueless and half the time, you have to be the tech and tell them what to look for or they'll never find it. Let us know what occurs.
Jan 15, 2009, 07:07 AM
#22
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I've driven 4, and they all do it. I've driven 2 since being tuned, and the issue is completely gone. If you are still experiencing the issue after the base map, then perhaps your car is having more issues other than the tune. Most likely no, there has not been any real damage done to anything in your engine, and even if you have been getting detonation, it's probably very minor so I wouldn't worry about it.
What is most likely occuring is you are getting misfires, where there is so much fuel in the combustion chamber that it can't properly ignite, causing 1 or more cylinders to not actually fire completely. Again, if the tune didn't fix your issue, there is something else wrong. Most likely culprits are fouled out spark plugs or a bad injector. Mention this to the dealer, and have them look into it. It's sad, but mitsu dealers are clueless and half the time, you have to be the tech and tell them what to look for or they'll never find it. Let us know what occurs.
What is most likely occuring is you are getting misfires, where there is so much fuel in the combustion chamber that it can't properly ignite, causing 1 or more cylinders to not actually fire completely. Again, if the tune didn't fix your issue, there is something else wrong. Most likely culprits are fouled out spark plugs or a bad injector. Mention this to the dealer, and have them look into it. It's sad, but mitsu dealers are clueless and half the time, you have to be the tech and tell them what to look for or they'll never find it. Let us know what occurs.
In regards to what you're saying..in your opinion would a cobb AP fix this issue? or would a custom tune be in order?
Jan 15, 2009, 09:32 AM
#23
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hesitation or stumble is probably the word you are looking for, and it sounds like the usual problem that was supposedly fixed by the first and second reflashes from the dealership. If you haven't yet had the flashes, take it to your dealer and ask them for the factory reflash, it is free of charge.
If thats not it, I would of said cold weather contributing to a boost/fuel cut but it looks like you are down south, don't think it gets too cold down there...
If thats not it, I would of said cold weather contributing to a boost/fuel cut but it looks like you are down south, don't think it gets too cold down there...
+1, I would try that first
Jan 15, 2009, 11:42 AM
#25
Granted, custom tunes are always better, even an OTS base map should fix the issue. An OTS map from cobb runs around low 11s on spool up, dropping to low 10s at redline IIRC. This should be more than sufficient for solving the hesitation issue and if not, there is most likely something else wrong with the car and a custom tune probably won't help. It sounds to me like the OP might have 1 or more fouled out spark plugs and/or 1 or more bad injectors, but who knows...
Jan 16, 2009, 03:05 PM
#27
I think you guys should just keep pushing Mitsu until they bring out factory reflash # 3 which will finally solve the overly rich AF issue.
But maybe if they fix that, the additional power will increase the number of clutch complaints…
BTW, don’t know if this is what you experience but my car had this hesitation / misfire anomaly at about 5000 – 5500 rpm when I accelerated hard. Installed the Cobb AP and that went away.
But maybe if they fix that, the additional power will increase the number of clutch complaints…
BTW, don’t know if this is what you experience but my car had this hesitation / misfire anomaly at about 5000 – 5500 rpm when I accelerated hard. Installed the Cobb AP and that went away.
Jan 19, 2009, 04:46 PM
#28
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I too have this hesitation under moderate or more acceleration, but only in fifth gear. My injectors are some what loud, is everyone elses injectors make a fairly loud plastic clapping noise when warm. Wonder if this is what makes my hesitation under acceleration. BTW I have the ECU flashes and a drop in HKS filter.
Jan 20, 2009, 05:51 AM
#30
I found out this weekend from my tech buddy (nissan, but called mitsu) that in order to even get the second flash now you need to throw a code for it, p1320. I went into the dealer to get the flash done, and the dealer said I already had it, I didnt believe him, and turns out I was right, my VIN showed no dealer reflash update, god I hate dealers. I am sure you can find a dealer who will just give you the reflash, but for some it will be hard.