Mazda3 Forums : The #1 Mazda 3 Forum - View Single Post - c_thur's Slow-T-F build
View Single Post
post #21 of (permalink) Old 06-23-2015, 02:21 PM
slow3
Grand Am Series
 
Join Date: Dec 2014
Location: Baxley's Speed Shop
Posts: 295
Its not so much about how much flow there is. Its more about the volume that is allowed to pass the sensor at that time and how it flows (straight vs roly poly vs around a bend, etc). Faster air movement = more maf voltage = more power = leaner AFR (leaner until you or the ECU accounts for it). But the MAF Scaling tables will tell the ECU how much volume there is at that MAF Voltage.

Basically, as long as the sensor is scaled properly for the volume, you can have more or less restriction before it without having to change anything in the tune. It will account for it.

A sensor that is set up for a 2" pipe will not know about the extra inch in a 3" pipe. But if you tell the sensor that there is more volume, it will compensate, with everything else being equal.

Compare the ID of your stock maf housing to your intake and if they are close, it will probably work. But you dont want to do it until you are ready to tune. The MAF Scaling tables in the tune will take care of the fact that the pipe ID isnt the same. If its really far off, it may not work...

Just make sure the tuner knows this upfront and if it ends up being a problem, you may need get the correct one. But there probably wont be any harm in trying.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
slow3 is offline  
 
 
For the best viewing experience please update your browser to Google Chrome
8