Help needed - emanage tune cutting out 5000rpm!!
05-20-2010, 03:03 AM
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Help needed - emanage tune cutting out 5000rpm!!
Assistance Needed!!!
I have a 2004 350z, with a newly installed HKS Supercharger. I am running 600cc DW injectors.
The ECU is a Greddy E-manage Ultimate using the stock MAF sensor and an additional Greddy MAP sensor.
My car is with my tuner, it's been there for 4 days now.
The issue my tuner is having is that it will not rev past 5000rpm. When it gets to 5000rpms it will feel like it's hitting the rev limiter/fuel cut.
We have checked the boost limit cut setting voltage and it is at 5volts.
Does anyone have any clues? ideas? or experience in this?
It's making 335HP up until 5000rpms, so it doesn't seem like it's in limp mode.
PLEASE HELP I really need your assistance!
Regards,
Ian
I have a 2004 350z, with a newly installed HKS Supercharger. I am running 600cc DW injectors.
The ECU is a Greddy E-manage Ultimate using the stock MAF sensor and an additional Greddy MAP sensor.
My car is with my tuner, it's been there for 4 days now.
The issue my tuner is having is that it will not rev past 5000rpm. When it gets to 5000rpms it will feel like it's hitting the rev limiter/fuel cut.
We have checked the boost limit cut setting voltage and it is at 5volts.
Does anyone have any clues? ideas? or experience in this?
It's making 335HP up until 5000rpms, so it doesn't seem like it's in limp mode.
PLEASE HELP I really need your assistance!
Regards,
Ian
05-20-2010, 05:39 AM
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They are tuning off the MAF, the Greddy emanage ultimate cannot tune without the stock MAF.
My theory is that the MAF is maxing out which is where the MAP needs to come in?
Thoughts?
My theory is that the MAF is maxing out which is where the MAP needs to come in?
Thoughts?
05-20-2010, 06:12 AM
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We have the volts clamped @ 4.9 volts, so it should not be hitting over 5 volts.
Lots of people have3 had success with the emanage, its no Haltech, but it does an adequate job.
05-20-2010, 06:40 AM
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You seem to know quite a bit about this, do you have a suggestion apart from getting a full standalone ECU?
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05-20-2010, 07:23 AM
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05-20-2010, 10:29 AM
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You need to tune using MAP instead of Fuel.
http://g35driver.com/forums/2488257-post10.html
alright, here is what you need to do to set it up right.
you need to add a map sensor, its cheap. add that and then set up your tables to be say -10 psi and scale its way up to about one more psi than you will be running. for a safe rule of thumb, leave all the negative timing on zeros and then once you get into positive boost, take out -3 ALL the way across any where you have positive boost. then, for each PSI of boost, take out one more -1 per psi. ex. 1 PSI = -3 , 2 PSI = -4, 3 PSI = -5 and so on up to your peak boost you are running.
also set up your fuel with PSI instead of off of the maf sensor wire voltage. this is the only way to do this with our factory maf signals unless you are running under 8 psi. last thing to do is to set that rpm boost cut up at the top that reads "clamp" when you open it to around 4.64 all the way across it. right now when you get to 5 volts on your maf, the car probably shuts down.....
good luck, thanks!!
give us a call today if you need that sensor
you need to add a map sensor, its cheap. add that and then set up your tables to be say -10 psi and scale its way up to about one more psi than you will be running. for a safe rule of thumb, leave all the negative timing on zeros and then once you get into positive boost, take out -3 ALL the way across any where you have positive boost. then, for each PSI of boost, take out one more -1 per psi. ex. 1 PSI = -3 , 2 PSI = -4, 3 PSI = -5 and so on up to your peak boost you are running.
also set up your fuel with PSI instead of off of the maf sensor wire voltage. this is the only way to do this with our factory maf signals unless you are running under 8 psi. last thing to do is to set that rpm boost cut up at the top that reads "clamp" when you open it to around 4.64 all the way across it. right now when you get to 5 volts on your maf, the car probably shuts down.....
good luck, thanks!!
give us a call today if you need that sensor
http://g35driver.com/forums/2488257-post10.html
05-20-2010, 01:59 PM
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Hmm Ink if you have the boost sensor from Greddy with harness sounds like a setup issue. You have to clamp your voltage (usually 4.9 or so) and set your fuel map to external greddy pressure sensor from menu. It sounds like you're ONLY using the MAF sensor. Not to insult you or your installer but you did cut the MAF wire right with in and out per the Greddy instructions? Once you do that, stock ECU will work off the MAF but your additional injector map (you do have the additional INJ harness tapped into inj wires right?) will add fuel to the specified degree and everything will work pretty well. Done it many times before with excellent results.
05-20-2010, 07:07 PM
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Thanks Guys!!!!!
Problem solved!!!
A "dummy" map was made for the stock MAF, while they tuned off the Greddy MAP!!!
Also, thanks for that info athenG!!! That was awesome and was exactly what they did!
Problem solved!!!
A "dummy" map was made for the stock MAF, while they tuned off the Greddy MAP!!!
Also, thanks for that info athenG!!! That was awesome and was exactly what they did!
05-20-2010, 08:42 PM
#13
Damn wish I would have seen this sooner, I could have thrown a few ideas since iv been tuning emanage blue and ultimate for 3years or so. Its always best to tune using MAP(greddy pressure sensor for example, i have also used a GM map sensor, *psi).
You are tuning with MAF adjustment? or do you also have the injector harness hooked up? Remember that when you have alot of MAF adjustment you are indirectly changing your timing (take away fuel = more timing)
You are tuning with MAF adjustment? or do you also have the injector harness hooked up? Remember that when you have alot of MAF adjustment you are indirectly changing your timing (take away fuel = more timing)
Last edited by streetzlegend; 05-20-2010 at 09:00 PM.
05-20-2010, 11:00 PM
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Not sure, will need to confirm with tuner.
Once i get it back from the tuner, i can log the maps and send to you to double check if you don't mind Streetzlegend?
I'm pretty sure they were tuning off the MAP.
Once i get it back from the tuner, i can log the maps and send to you to double check if you don't mind Streetzlegend?
I'm pretty sure they were tuning off the MAP.
05-21-2010, 07:11 AM
#17
The better way of tuning is via the injectors, the same thing you have PSI X RPM on the table, and you can adjust duty cycle, or duration, so given the conditions, 7psi at 3400rpm you add or remove fuel, it gets the signal coming from the ECU injector wires and alters it to add or remove, then sends the signal to the injectors.
In other words, Tuning with MAP just means that your reading pressure, you still gotta see what is being used to adjust fuel, Maf signal or injectors.
This is just to tell you more or less how it works
05-21-2010, 07:31 AM
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^^ Thanks for that, I have a better understanding of it now.
You mentioned earlier about an injector harness to tune via injectors. I don't believe I have this unless it comes with the Greddy ecu harness that plugs into our factory ecu? Which means they are tuning via maf?
You mentioned earlier about an injector harness to tune via injectors. I don't believe I have this unless it comes with the Greddy ecu harness that plugs into our factory ecu? Which means they are tuning via maf?