Have you ever done something to fix fuel cut and it DIDN'T work?

[carrotsnax]

Hmm interesting. I installed a fuel cut defender and I am still hitting fuel cut. Although, interestingly enough I am running 10 psi on a stock WGA. I tested it before installing and it was fine. My car has always run 10 psi from the moment I boosted it. hmm

 

[mazdaspeed41]

I was wondering if you know there is an adjustment screw on the FCD, you have to dial it in to work correctly...

Hmm interesting. I installed a fuel cut defender and I am still hitting fuel cut. Although, interestingly enough I am running 10 psi on a stock WGA. I tested it before installing and it was fine. My car has always run 10 psi from the moment I boosted it. hmm

 

[Alamo1]

sub

 

[CrazyCaker]

can you run a fcd with a microtech or should you just let the microtech do its job.

The Microtech has an onboard MAP sensor, you don't even have to use the MAF with it (I tossed mine). So why would you need a fcd?

 

[cougar10agREDUX]

dunno if this was answered yet...

fuel cut is from maxing out the MAF voltage, you should get a DTC that says something along the lines of MAF voltage too high. 10 PSI in 90 degree weather does not flow the same amount of air as 10 psi in 40 degree weather. a mass air flow sensor measures the density of air that flows past it, it doesn't know pressure or speed.

if you are getting fuel cut, get either an FCD, an AFC and larger injectors so you can lower the MAF voltage, go with a standalone, or turn the boost down if it's not stock.

 

[ispecht]

Me and my buddy worked this out, he has a 03.5 blue msp with fuel cut problems at 10 psi, hes an electrical engineering student and i'm a mechanical and I have a 03 black msp with fuel cut problems at 10 psi, as everyone is aware our MAF sensor uses current and it outputs a square wave, the frequency corresponds to the temperature and the current output corresponds to the airflow, I have confirmed this using an oscilloscope and using a shopvac and cold air from a dust remover on the sensing element.

The solution is a voltage controlled current clamp.

The link to the schematic is below, very simple, clamps at around 4.8 milliamps.

use diodes with a forward voltage of 0.8,