# S14 SR ECU Question **URL:** \ **Category:** SON240sx Automotive\ **Created:** [March 15, 2006, 7:44pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877 "2006-03-15T19:44:17Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![QuincyRedS14](https://avatars.discourse-cdn.com/v4/letter/q/dbc845/32.png) [@QuincyRedS14](https://forums.speedlife.net/u/QuincyRedS14)\ **Post date:** [March 15, 2006, 7:44pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/1 "2006-03-15T19:44:17Z")
How do I know what I have, a zenki or kouki, are the ECUs interchangable. I know WC code=zenki, NA=kouki. I thought mine said NA on top. But it may have been WC. My sticker’s gone. I got a headache. ---
**Author:** ![QuincyRedS14](https://avatars.discourse-cdn.com/v4/letter/q/dbc845/32.png) [@QuincyRedS14](https://forums.speedlife.net/u/QuincyRedS14)\ **Post date:** [March 15, 2006, 11:57pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/2 "2006-03-15T23:57:20Z")
Found out you can tell by the harness. White means kouki. Blue means zenki. Mods pls lock. ---
**Author:** ![luka](https://avatars.discourse-cdn.com/v4/letter/l/a587f6/32.png) [@luka](https://forums.speedlife.net/u/luka)\ **Post date:** [March 16, 2006, 4:41am UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/3 "2006-03-16T04:41:17Z")
> [@QuincyRedS14](#): > > Found out you can tell by the harness. White means kouki. Blue means zenki. > Mods pls lock. what’s with the obsession with locking? maybe there are other distinguishing markers between the two that should be checked out as well? what if one friday afternoon when his s14 was built nissan ran out of blue connectors building a zenki and decided to use a white connector? it happens. and Quincy, I think your website got hax0red. gotta love the russians. ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [March 16, 2006, 10:10am UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/4 "2006-03-16T10:10:45Z")
valve cover fastners are nuts on zenki and bolts on kouki as well ---
**Author:** ![luka](https://avatars.discourse-cdn.com/v4/letter/l/a587f6/32.png) [@luka](https://forums.speedlife.net/u/luka)\ **Post date:** [March 16, 2006, 2:46pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/5 "2006-03-16T14:46:18Z")
Kouki is also suppose to have the “click-click” oil cap and zenki not, but guess what, my zenki came with a “click-click” the valve cover fasteners (like sasha described) are the best indicators. ---
**Author:** ![slipperysilvia](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slipperysilvia/32/5485_2.png) [@slipperysilvia](https://forums.speedlife.net/u/slipperysilvia)\ **Post date:** [March 16, 2006, 3:30pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/6 "2006-03-16T15:30:28Z")
hey dude…the WC ecu has the longer plug, same size as the s13 sr plug…the NA is a much shorter plug…bring the ECu to me and ill tell u within a second which it is… or u can look at ure mafs…ure ure mafs is oval, its supposed to be an NA ecu…it the mafs is rectangle, its the early style WC 95-96 ecu… hoep this helps. ---
**Author:** ![QuincyRedS14](https://avatars.discourse-cdn.com/v4/letter/q/dbc845/32.png) [@QuincyRedS14](https://forums.speedlife.net/u/QuincyRedS14)\ **Post date:** [March 16, 2006, 5:15pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/7 "2006-03-16T17:15:32Z")
I got a zenki because sasha told me that I got one. Yay. I found out that both engines are identical despite the minor differences, which I was not interested in. I’m interested in getting an aftermarket ECU for the car and my view is that if I get a kouki ECU+wiring harness I can use it on the zenki engine. Now that I think I got a zenki harness+ECU I’m going to get a zenki one. ---
**Author:** ![slipperysilvia](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slipperysilvia/32/5485_2.png) [@slipperysilvia](https://forums.speedlife.net/u/slipperysilvia)\ **Post date:** [March 16, 2006, 5:40pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/8 "2006-03-16T17:40:47Z")
when going aftermarket, always use te 95-96 harness , and ecu…much easier to find supporting parts for… ---
**Author:** ![KoukiS14](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/koukis14/32/5522_2.png) [@KoukiS14](https://forums.speedlife.net/u/KoukiS14)\ **Post date:** [March 16, 2006, 9:17pm UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/9 "2006-03-16T21:17:44Z")
> [@slipperysilvia](#): > > when going aftermarket, always use te 95-96 harness , and ecu…much easier to find supporting parts for… yeah tell me about it. Ive got a Kouki engine and ECU. Try finding a spare ecu for that thing…not fun. ---
**Author:** ![slipperysilvia](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slipperysilvia/32/5485_2.png) [@slipperysilvia](https://forums.speedlife.net/u/slipperysilvia)\ **Post date:** [March 17, 2006, 3:54am UTC](https://forums.speedlife.net/t/s14-sr-ecu-question/93877/10 "2006-03-17T03:54:49Z")
i can get kouki (NA) code ecu’s within about 8-12 business days…if u need one that u wanna send out for a tune or whatever call me anytime…