MAF Cliping with Turbo Kit

[Bluevitz-rs]

Originally Posted by kou

Only maps you should be using are the o2 and fuel maps. Maf clamp is in the setup menu and should be set at 4.95. unless you have the maf in a bigger or smaller pipe that is what the maf table is for. aem does not really go over this and it causes alot of people problems.

I have it set to 4.9v. The problem is I can get it to produce 3.9V at as low as 2000 rpm. I'm thinking the computer sees this as a problem and cuts ignition or fuel.

The MAF table allows you to set the voltage output based on the voltage input.

So you can have it read exactly as it should up to the point where the turbo starts drawing in more air than a NA engine would and makes it freak out, clamping the voltage at a set RPM.

I've had this problem even before I had an FIC installed. I've even run the car without the O2 sensor hooked up and just the FIC making fuel adjustments.