Quote:
Originally Posted by scooby doo
I dont think you can run 1.5 on the stock ecu your boost readings are about right mine was mapped to 1.45bar and made 1.3 in 3rd then 1.45 in 4th and 5th
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There is a 300g/s limit on the MAF for the 16 bit ECU, but this is not a physical limit of the MAF/MAF tube, but the resolution of how it's coded i.e it won't accept a value entered greater than 300 for MAF scaling i.e a 4.69V MAF reading = 292g/s on a stock ROM..
There is a work around to re-scale the MAF and associated tables that use a load scale. You can 1/2 your MAF g/s scale parameters then 1/2 all maps that use a load scale (the load is derived/calculate by using the MAF reading). This in theory allows you to run upto 600g/s on a stock MAF sensor if the MAF tube was of a size that could flow it.
I've done this on 18G, 20G and 2.5's running 20G, but can't recall why or how close we got to the 300g/s limit. But it was 10 years ago (which was a surprise when I just looked and the file dates).