Yes. Swap in millenia ECU(not millenia s ecu). do a vaf -> maf conversion with IAT sensor... and you can run Millenia S injectors or 929 injectors and be stoich at idle and at WOT under boost.
White Dart on probetalk has done it. I dont know why No one has ever brought it up.
I found the guy on facebook and am grilling him on details, but here is what he has said regarding the subject.
"Okay, just to clear some things up. Yes that is my car. I ran that setup for well over a year. Never once did I foul plugs or have any major goofyness go on. I did a lot of testing and datalogging with what the MAF was reading, and when the MAF was placed post-turbo (with a recirculated bypass), it actually WOULD read all the incoming air. Surprising, I know. The ECU would trim enough fuel under cruising so the 280cc injectors would get normal AFRs, and the extra airflow being read during boost was translated into more fuel. Obviously since the ECU was not intended for boost, it was not perfect, but it worked. My theory is that there is no actual fuel map in the Millie ECU, unlike the VAF based ECUs which very obviously have one. Its commonly known that when the VAF maxes out and the stock ECU goes into an open loop "blind mode" where it runs off a pre-determined map.
The Millie MAF ecu does not do this. It is actively reading airflow 100% of the time, which is why in N/A applications it shows good power gains, especially with upgrades to the intake manifold/TB/CAI since the ECU can "see" more airflow. This is the theory that I based my idea that it could work under boost, and it did. However, as I said before, its not perfect. There are some lean spots at partial boost, you must run a recirculated bypass valve, and there does not appear to be any retarding of ignition timing (a big concern).
I did MS on two different occasions and was plagued with problems both times. I wont go into detail but needless to say, I was pretty unhappy with it. After I ripped all the MS stuff out, I put the MAF setup back in, and took a chance on the AEM F/IC. It worked out beautifully. I have the MAF placed post turbo so I can do an atmospheric BOV, driveability is near flawless, and I can pull timing under boost. 99% of dyno shops will tune it for you. It drives just like stock, only a lot faster. Its exactly what I wanted on my boosted ZE. I hadn't even had to touch my initial street tuning I did in over a year, up until I installed the twins and the beginning of this past spring. For a simple boost setup without all the bells and whistles and potential issues with MS, I would STRONGLY recommend the Milie MAF and the AEM F/IC."
"MAF > turbo>intercooler>bypass valve venting to in between the MAF and turbo>intake manifold."
you have to use a recirculated bov because the air has already been read by the maf and if you remove the air(bov), the ecu doesnt know and will still add the same fuel, making it go rich between shifts, and stalling.
this seems like too good to be true. watch the vids. what do yall think??
White Dart on probetalk has done it. I dont know why No one has ever brought it up.
I found the guy on facebook and am grilling him on details, but here is what he has said regarding the subject.
"Okay, just to clear some things up. Yes that is my car. I ran that setup for well over a year. Never once did I foul plugs or have any major goofyness go on. I did a lot of testing and datalogging with what the MAF was reading, and when the MAF was placed post-turbo (with a recirculated bypass), it actually WOULD read all the incoming air. Surprising, I know. The ECU would trim enough fuel under cruising so the 280cc injectors would get normal AFRs, and the extra airflow being read during boost was translated into more fuel. Obviously since the ECU was not intended for boost, it was not perfect, but it worked. My theory is that there is no actual fuel map in the Millie ECU, unlike the VAF based ECUs which very obviously have one. Its commonly known that when the VAF maxes out and the stock ECU goes into an open loop "blind mode" where it runs off a pre-determined map.
The Millie MAF ecu does not do this. It is actively reading airflow 100% of the time, which is why in N/A applications it shows good power gains, especially with upgrades to the intake manifold/TB/CAI since the ECU can "see" more airflow. This is the theory that I based my idea that it could work under boost, and it did. However, as I said before, its not perfect. There are some lean spots at partial boost, you must run a recirculated bypass valve, and there does not appear to be any retarding of ignition timing (a big concern).
I did MS on two different occasions and was plagued with problems both times. I wont go into detail but needless to say, I was pretty unhappy with it. After I ripped all the MS stuff out, I put the MAF setup back in, and took a chance on the AEM F/IC. It worked out beautifully. I have the MAF placed post turbo so I can do an atmospheric BOV, driveability is near flawless, and I can pull timing under boost. 99% of dyno shops will tune it for you. It drives just like stock, only a lot faster. Its exactly what I wanted on my boosted ZE. I hadn't even had to touch my initial street tuning I did in over a year, up until I installed the twins and the beginning of this past spring. For a simple boost setup without all the bells and whistles and potential issues with MS, I would STRONGLY recommend the Milie MAF and the AEM F/IC."
"MAF > turbo>intercooler>bypass valve venting to in between the MAF and turbo>intake manifold."
you have to use a recirculated bov because the air has already been read by the maf and if you remove the air(bov), the ecu doesnt know and will still add the same fuel, making it go rich between shifts, and stalling.
this seems like too good to be true. watch the vids. what do yall think??