Originally posted by Aussie SVT:
The unmetered air is NO different to having the bigger MAF.....Because essentially a bigger MAF lets in more air than the computer thinks the engine is getting. This is due to the fact that the calcs for the airflow in the fuel tables within the program in the ECU are setup for a 75mm orifice in the MAF.
Yes, it is different. The larger MAF still MUST have the correct ratio of flow over the wires as the stock MAF, that's why just any old MAF will not do. The 80mm Ford MAF just happens to be close enough to work, the 75mm and 73mm aftermarket MAFs are calibrated by their respective companies. I'm glad your breathers work for your combination and you're more than likely in the safe range of fuel mixture as the MIL will trip for dangerous lean trim levels, but the two mods are not compareable. Also, thanks for the write up on the TB, very nice pics too.
