The Turbonetics S/T is in and MAN what a rush!!!
I heard HKS makes a device that converts a MAP signal to a MAF signal to feed the ECU....Not sure on the details. Something I heard on the Sentra boards....
heres the link from HKS... http://www.hksusa.com/products/?id=858&rsku= not sure if it will work or not...
heres the link from HKS... http://www.hksusa.com/products/?id=858&rsku= not sure if it will work or not...
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From: Albuquerque/NM
Originally Posted by MIAPLAYA
I heard HKS makes a device that converts a MAP signal to a MAF signal to feed the ECU....Not sure on the details. Something I heard on the Sentra boards....
heres the link from HKS... http://www.hksusa.com/products/?id=858&rsku= not sure if it will work or not...
heres the link from HKS... http://www.hksusa.com/products/?id=858&rsku= not sure if it will work or not...
Originally Posted by Speed Dreams
Researching that,thanks Rob.
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From: Phoenix, AZ
Originally Posted by MIAPLAYA
No problem....HOpe that works as advertised. If so that would be a nice device. I read a little more on it last night and it looks like you add a IAT sensor and MAP sensor and you can also add a Super AFR or GCC and fine tune the curve precisely as you want.....
Q. Can I install the MAP-ECU myself, there are only a few simple connections?
A. Yes, but you should have a professional performance tuning specialist
tune the unit.
Q. How do you get a performance upgrade with the MAP-ECU?
A. Two ways: Firstly you remove the AFM, which can be a restriction, especially if you have increased boost, etc. Secondly you are able to tune the Air/Fuel ratios for your engine. The tables in most stock ECU's are compromises for the variations in thousands of production cars. This means it is not tuned for your engine, especially if you have made changes around the engine for performance. Most stock tables are also very rich to prove a safety margin for the manufacturer against warranty claims. The MAP-ECU allows you to tune the Air/Fuel ratio for optimum performance for your engine.
Q. What kind of performance gain can I expect with a MAP-ECU?
A. That depends on your engine, it's condition and what modifications, if any, you have made. A Toyota 3S-GTE gained 30kW's at the wheels in a back-to-back dyno run comparing the stock AFM with a tuned MAP-ECU configuration, with no change in boost.
Q. Will the MAP-ECU work on non-turbo cars?
A. Yes, it will. There is no reason why you cannot install a MAP-ECU in a naturally aspirated car so you can remove the AFM and gain complete control over fuel delivery. In fact, you can order the unit with expanded vacuum sites in the table especially for NA engines to improve tuneability.
A. Yes, but you should have a professional performance tuning specialist
tune the unit.
Q. How do you get a performance upgrade with the MAP-ECU?
A. Two ways: Firstly you remove the AFM, which can be a restriction, especially if you have increased boost, etc. Secondly you are able to tune the Air/Fuel ratios for your engine. The tables in most stock ECU's are compromises for the variations in thousands of production cars. This means it is not tuned for your engine, especially if you have made changes around the engine for performance. Most stock tables are also very rich to prove a safety margin for the manufacturer against warranty claims. The MAP-ECU allows you to tune the Air/Fuel ratio for optimum performance for your engine.
Q. What kind of performance gain can I expect with a MAP-ECU?
A. That depends on your engine, it's condition and what modifications, if any, you have made. A Toyota 3S-GTE gained 30kW's at the wheels in a back-to-back dyno run comparing the stock AFM with a tuned MAP-ECU configuration, with no change in boost.
Q. Will the MAP-ECU work on non-turbo cars?
A. Yes, it will. There is no reason why you cannot install a MAP-ECU in a naturally aspirated car so you can remove the AFM and gain complete control over fuel delivery. In fact, you can order the unit with expanded vacuum sites in the table especially for NA engines to improve tuneability.
Last edited by SSR Engineering; Jul 19, 2005 at 09:43 AM.
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From: Phoenix, AZ
Turbonetics has verified the flash to be good on my car. They are going to reflash it anyway and send it back. The result is that there is still something wrong with the car that is undiagnosed, and I am the only one with this kit to have had this problem to date.
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From: Arlington, VA
Originally Posted by kcobean
Turbonetics has verified the flash to be good on my car. They are going to reflash it anyway and send it back. The result is that there is still something wrong with the car that is undiagnosed, and I am the only one with this kit to have had this problem to date.
Originally Posted by MIAPLAYA
I heard HKS makes a device that converts a MAP signal to a MAF signal to feed the ECU....Not sure on the details. Something I heard on the Sentra boards....
heres the link from HKS... http://www.hksusa.com/products/?id=858&rsku= not sure if it will work or not...
heres the link from HKS... http://www.hksusa.com/products/?id=858&rsku= not sure if it will work or not...
Seems very interesting. I wonder if they have specific applications for specific cars(maybe need a specific harness). They also have a couple on EBAY.
Anyways i think it is not needed to sort the issue out. The rest of the TN cars with properly tuned MAF have no issues(taurran). This one should be no different? Just my 2cents
Last edited by Zexy; Sep 24, 2005 at 04:44 PM.
Originally Posted by Zexy
Anyways i think it is not needed to sort the issue out. The rest of the TN cars with properly tuned MAF have no issues(taurran). This one should be no different? Just my 2cents
Care to share with the rest of us what a properly tuned MAF is, and why it's not needed to sort the issue out (Perhaps because it's not your car?) You're right, my car SHOULD be no different but it is, and I'll bet you I'm not the only one.35ounces, you have PM. Basically, no this was never resolved. Turbonetics, AAM, and another shop all looked over this (Turbonetics as much as they could from 3000 miles away) and nobody could figure it out. The install was checked and re-checked, the ECU was flashed, reflashed and verified, and nothing turned up. Fuel pressure is good, no boost leaks, everything checks out. Maybe it's my "untuned MAF". I'm preparing to install an EU and a boost controller on the car to rectify the issue. My car is still making 370/370 on the dyno, but I want to make that power with proper boost and A/F ratio, which is something I'm not doing right now. I'm seriously considering driving the car down to NC and asking Sharif to fix this once and for all.
Originally Posted by kcobean
What a completely non-sensical statement. Care to share with the rest of us what a properly tuned MAF is, and why it's not needed to sort the issue out (Perhaps because it's not your car?) You're right, my car SHOULD be no different but it is, and I'll bet you I'm not the only one.
Care to share with the rest of us what a properly tuned MAF is, and why it's not needed to sort the issue out (Perhaps because it's not your car?) You're right, my car SHOULD be no different but it is, and I'll bet you I'm not the only one.Last edited by Zexy; Sep 24, 2005 at 08:24 PM.
Originally Posted by Zexy
I'm sorry. Forget my last statement. I meant TN cars using OEM MAF with no modifications to it(like possibility of using the HKS VPC like some of us just discussed.) I meant if others do not have this current issue that your car has, that some stated it is weird/unique, then yours should be no different. Maybe it's just the need of keep troubleshooting elsewhere around the car so I think the MAF may not be the problem. I never meant to offend anybody, i know it's not my car, i'm not trying to add negativity on posts as they highly educate me, i am not trying to compete with other people's knowledge, and i do think the TN kit is great . I was just giving my 2cents. Sorry if i have offended you as well.
Again, sorry I mis-took your post.
Originally Posted by kcobean
While we haven't installed a different MAF sensor on the car, I think we've pretty much eliminated the MAF system as the culprit. Unfortunately, that elimination hasn't brought to the surface anything else.
What other reasons do you think the MAF may not be the problem? Just curious.
Originally Posted by Zexy
Although i say the OEM MAF and it's function may not be the problem, the unit itself may be faulty for some reason, so i'd still install a different unit to see what happens.
What other reasons do you think the MAF may not be the problem? Just curious.
What other reasons do you think the MAF may not be the problem? Just curious.
I haven't heard of a malfunction in a MAF sensor where it provides improper voltage that didn't affect the idle, and my car's idle is rock solid.
Originally Posted by kcobean
My car is still making 370/370 on the dyno, but I want to make that power with proper boost and A/F ratio, which is something I'm not doing right now. I'm seriously considering driving the car down to NC and asking Sharif to fix this once and for all.
I think ZEXY is talking about the electronical limitations of our MAF. I too feel that your MAF is fine, and not malfunctioning. The ECU is very sensative to anomolies in the MAF voltage, and any erratic behavior will immediatley throw a CEL. The MAF is the KEY sensor that the ECU uses to control the engine, along with TPS, and both of these senors are very sensative to abnormal changes in voltage.
The EU will quickly and easily solve the tuning issue, provide that there is no mechanical issue with the car. Sounds like your shops checked and double checking things like the fuel system, vaccum leaks, hose couplers, etc....so thats a good thing.
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