Suzuki Swift Repository
Forum for Suzuki Swift Enthusiasts to discuss and share information.
GT4LIFE wrote: ↑Tue Dec 17, 2019 9:56 pmGlad to see you have a grasp of what is going on.
There is a lot of science that goes into the exact placement location of the MAF sensor. A lot of it has to do with trying to achieve laminar flow of air to the sensor while still maintaining some kind of protection for the sensor. One of the primary requirements is having a straight pipe up stream from the sensor that is double the diameter of the pipe in distance from the sensor that is a constant diameter. For example the stock diameter to the sensor is 3″ and that means there should be 6″ of uninterrupted 3″ straight pipe up stream from the sensor. The stock location does not meet this because it doesn’t have the space before the 90 degree bend out the fender wall. What they did instead is come up with the in line filter to diffuse the air flow to make the air flow less angular coming out of the 90 degree bend. There is a good write up of this in Engine Management Advanced Tuning by Greg Banish.
I still need to weld the MAF adapter to the blow off valve pipe. Once I go standalone I will most likely go to a MAP sensor and remove any obstruction in the intake piping. I will likely go back to the same diameter of the down stream piping which is 2 ½″. To be honest the 2″ passage through the stock MAF is not likely to restrict the air to anything that an NA system is going to put out in a G13B. In fact when I calculated turbulence pressure restriction through a round pipe your not seeing much below 500 hp system with a 2″ piping as long as the bends being used are smooth and the number of bends is as few as you can get. For example using two 45 degrees to get a 90 degree will greatly reduce the pressure restriction. I think having an aftermarket sensor to drop into the stock housing would be a nice option for most people.
I tighten my alternator today, cleaned down the ca[…]
:-o wow :-o i wrote a small list of items for t[…]
I have a complete set. I only installed the insid[…]
Some images to go with. I'm not sure if he is sti[…]