FMU Intake, group Buy

[fluidmotorunion]

Well my first question is what did the MAF readings change to from adding a larger ID pipe to the equation.

The stock MAF is only about 2.75" ID, so when increasing the pipe ID to almost a full 3" like seen in pictures you are going to drop the MAF g/s readings.

Which dropping the MAF readings is most likely needed when adding bigger turbos to cars, to prevent the MAF from getting above 4.6v on the signal.

But when keeping stock turbos, this will effect drivability and tuning

But otherwise, I like the design and use of the enclosed filters

The ID of the MAF section remains stock. The tubing in the other sections is of a larger diameter, but the section in which the MAF is contained remains at ~2.75", like you said. This way, the MAF doesn't freak out, and you can slap this intake on without requiring an additional tune. Airflow is still increased, but the readings won't start getting screwy.

[yokust]

The ID of the MAF section remains stock. The tubing in the other sections is of a larger diameter, but the section in which the MAF is contained remains at ~2.75", like you said. This way, the MAF doesn't freak out, and you can slap this intake on without requiring an additional tune. Airflow is still increased, but the readings won't start getting screwy.

Do you have a picture of how you step up the intake at the original MAF housings, since its a 2.7" ID at the MAF?

[fluidmotorunion]

Do you have a picture of how you step up the intake at the original MAF housings, since its a 2.7" ID at the MAF?

The pipe remains at 2.75" from the MAF all the way to the manifold that connects to the turbo. Since the ID of the piping continues to decrease all the way to the turbo, to step it back up would be basically pointless. Even though the ID of our piping is exactly similar to OEM, and utilizes the OEM manifolds, if we were to try to connect these specific airboxes to the OEM MAF piping, we'd hit the hood and run into fitment issues like crazy. So as a result, to get the airflow to the levels we wanted with the airboxes we deemed best for the given application, we had to fab up our own piping of the same ID.

[DHall1]

Looks nice. The pics help a great deal.

I like the idea of keeping the tubing size the same at the MAFs. This is a must.

[yokust]

The pipe remains at 2.75" from the MAF all the way to the manifold that connects to the turbo. Since the ID of the piping continues to decrease all the way to the turbo, to step it back up would be basically pointless. Even though the ID of our piping is exactly similar to OEM, and utilizes the OEM manifolds, if we were to try to connect these specific airboxes to the OEM MAF piping, we'd hit the hood and run into fitment issues like crazy. So as a result, to get the airflow to the levels we wanted with the airboxes we deemed best for the given application, we had to fab up our own piping of the same ID.

Not sure if you got what I meant.

I understand that the piping is 2.75" all the way, which is good.

But the OD of that oem MAF is 3.25", So how do you step the pipe back up to that to get a good seal on the oring in the stock MAF manifold/housing whatever you want to call it

[fluidmotorunion]

Not sure if you got what I meant.

I understand that the piping is 2.75" all the way, which is good.

But the OD of that oem MAF is 3.25", So how do you step the pipe back up to that to get a good seal on the oring in the stock MAF manifold/housing whatever you want to call it

Sorry about the confusion.

We use an aluminum sleeve that tapers from the 3.25" to the 2.75".