I have this setup on my 280ZXT and the MAF sensor appears to be going bad. When going into boost, part throttle (I cound not run the engine full throttle), AFR would climb to 17:1 (using wide band sensor). I checked the voltage signal from the MAF sensor to the ECU and it would sometimes reach 4v, other times only ablut 2.5v, and twice the signal momentarily cut out. The problem has progressively gotten worse.
So here's the question: I don't want to spend $350+ on a new 93 Ford Cobra MAF sensor, so I called JWT and asked a simple question. Since my setup uses the stock MAF sensor from a 93 Ford Cobra, cound I use one of the many aftermarket MAF sensors calibrated for a stock 93 Ford Cobra? The answer I was given was to stick to the MAF sensor that was designed and tested for my setup, the aftermarket sensors have not been tested to see what kind of signal they would provide the Nissan ECU.
I know that JWT sells this sensor for other upgraded ECU setups as well (240SX, 280ZXT, 300ZX (Z31), ALTIMA, G20, I30, SENTRA, SENTRA GTIR), so, I understand that they have not tested any other sensors with their setups, but if an aftermanket sensor is a direct replacement for a stock 93 Ford Cobra, why wouldn't it be for me?
And by the way, some of these aftermarket sensors can be picked up for about $160.
Any comments?