Feature request: Dual MAFS

[winstonusmc]

I have an RB26 with dual MAFS. I know how the stock ECU simply adds the two together. I see the advantages to two MAFS on other applications that involve twin turbo. One turbo is always a little less efficient than the other. In my application the front is the efficient one due to the shorter piping. Is this doable?

[Mitch318i]

May I suggest that even if we cannot have 2 frequency type MAF inputs, if it is possible to impliment the Voltage type?
As covered above, for twin turbo applications, this would be great.
If not, to answer the guy above, It is possible to impliment a small microcontroller to add the signals (either voltage or frequency) together, then convert to one 0-5V signal, This was going to be my solution if they couldn't be added.

.Mitch

[jacky4566]

Bumping this very old thread. Also interested in this feature.

Additionally. in the meantime, It would be advised to take the higher voltage of the 2 mafs. That way one bank is always rich instead of lean should one maf read too low AND you have redundancy should one fail. Easy enough to implement with Schottky diodes.

[Spiffy]

Selin dual maf translator?

[AbatelliCristian]

Dual MAFS for RB26 is good idea. with ITB is not simply tuner the engine in Speed density.. Is necessary dualtable.
News for dual MAF? is possible?

[Reverant]

What problem exactly are you having on the RB?

[AbatelliCristian]

I worked a short time, but I noticed that the TPS % is very important for AFR. If I have 0,2 boost - 30%tps, or 0,2 boost - 100%TPS, the afr is very different. In the coming weeks, I'll be working and I think I will use dual table.
dual MAFS is good solution

[Reverant]

I worked a short time, but I noticed that the TPS % is very important for AFR. If I have 0,2 boost - 30%tps, or 0,2 boost - 100%TPS, the afr is very different. In the coming weeks, I'll be working and I think I will use dual table.
dual MAFS is good solution

The reason I asked because I have sort of the same problem on an R34 with RB30 engine, which can easily achieve 0.6bar-0.7bar at part throttle cruising/slow accelerating on a 70mm turbo. Our solution was to use dual tables and blend based on TPS.

[jacky4566]

I worked a short time, but I noticed that the TPS % is very important for AFR. If I have 0,2 boost - 30%tps, or 0,2 boost - 100%TPS, the afr is very different. In the coming weeks, I'll be working and I think I will use dual table.
dual MAFS is good solution

The reason I asked because I have sort of the same problem on an R34 with RB30 engine, which can easily achieve 0.6bar-0.7bar at part throttle cruising/slow accelerating on a 70mm turbo. Our solution was to use dual tables and blend based on TPS.

The RB26 MAFS are voltage based right? Why not use my suggested solution above?

[Reverant]

Our application does not use MAFs, only MAP and a single turbo.

[AbatelliCristian]

The RB26 MAFS are voltage based right?

I will check because I don't know.

The reason I asked because I have sort of the same problem on an R34 with RB30 engine, which can easily achieve 0.6bar-0.7bar at part throttle cruising/slow accelerating on a 70mm turbo. Our solution was to use dual tables and blend based on TPS.

I think I will use dualtable. Ve1 speeddensity and Ve2 alphan.

You use standard CAS with 360 trigger?

[AbatelliCristian]

RB26 MAF is voltage