i read somewhere that it was 70 mm. i want to make sure because i want to buy a 75 mm trickflow street intake maifold, 75mm manifold elbow and 75 mm throttle body. i want to match all components as much as possible. if the mass air meter is 70 mm i will stick with stock, but if it is 65 mm then i will buy a larger mass air meter. anybody knows for sure what size the stock air meter is?
The stock MAF housing has a bore of just over 70mm but it has a thick vertical bar running down the middle that's a big hindrance to airflow. If you just grind that away but leave the tube intact where the hot wire sensor sits, it'll improve airflow quite a bit especially if you also remove the mesh screen.
Already covered this in another thread not too long ago, you can't do that, it will ruin the sample volume.
That's why I said you don't disturb the "calibration" tube part.
It has nothing to do with the electronics. The mass air meter is dependent on a certain percentage of the air volume bypassing the sample tube. If you increase the cross sectional area of the meter by removing any material from inside the meter, the total sample volume will change, therefore causing it to give innacurate readings.
Kurt
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