[QUOTE=MacRob;2877709]
Quote:
Originally Posted by roverbeast75
Going by ATAF4049 its an AlphaTec unit. Even though its a straight swap and the whole unit fits perfectly, I just removed the sensor and replaced the original. Car has done only 500 miles with it on but the engine never performed as well as it does now, Power/performance is up and so in fuel econ. I did have a new CAT fitted at the same time so that might play apart as well. That was another bargain from bankrupt stock that only cost £33 Brand New for the full pipe. Oh would like to add just in case I get the Nay sayers going on about the MAF. The car went in for its MOT on Saturday and passed with flying colours, no advisories and had an emissions reading of 0.35 at idle and 0.55 at 4500rpm. The limit is 1.00
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You can unplug the MAF in which case it'll definitely overfuel and it will still pass the emissions test, lots on here have done that
What I can say is that over the years I've seen lots of cars fitted with just about every aftermarket MAF and not one has matched the airflow readings of the original Bosch units.
Russ