# what is the sr20 maf plug ? 3 or 4 pin plug?

**URL:** https://forums.speedlife.net/t/what-is-the-sr20-maf-plug-3-or-4-pin-plug/155997
**Category:** SON240sx Automotive
**Created:** [June 3, 2010, 5:29pm UTC](https://forums.speedlife.net/t/what-is-the-sr20-maf-plug-3-or-4-pin-plug/155997 "2010-06-03T17:29:04Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![drivenautosports](https://avatars.discourse-cdn.com/v4/letter/d/9f8e36/32.png) [@drivenautosports](https://forums.speedlife.net/u/drivenautosports)
#### Post date: [June 3, 2010, 5:29pm UTC](https://forums.speedlife.net/t/what-is-the-sr20-maf-plug-3-or-4-pin-plug/155997/1 "2010-06-03T17:29:04Z")

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hey,

i just did a sr20 swap on my s13, i had a ka24de in there before, my sr wiring harness maf plug is not fitting on the sr maf, the sr maf has 3 pins and requires a smaller plug, then the 4 pin maf plug that is on the sr wiring harness which is a 4 pin and plug right into my old ka maf… but not on my sr maf…

Just need help to find out whats going on? can i use my ka maf? or do i have to change the wiring ??? any ideas?