Getting Project STurdteen (S13) Running Right with an AEM Infinity PNP EMS and Wiring Specialties Engine Harness

by Rathyna Gomer

Hopefully, you've been keeping up with the steady progress of transforming my STurdteen into a reliable and worthy demo drift car. Powered by an SR20DET and with all of the new goods going into this build (see the new Turbonetics setup I went with here), I needed an adequate engine management system to handle engine control duties.  The search for the perfect EMS didn't last very long because I soon discovered what I consider the best solution out there - the AEM Infinity Plug and Play EMS.


I selected the AEM Infinity 8H for my car because everyone in the office said that this was the perfect system for my intended use.  The heart of the AEM Infinity is a 200MHz processor that can perform operations at 400 MIPS.  It can log 64 GB of data at 1 KHz.  I am not sure what any of that means but the boss said it's all good!

The Infinity also has a sleek, sealed water and shock resistant enclosure and com ports. This can allow it to be mounted in the engine compartment if desired. The Infinity is multimap capable and has the capacity for tons of data logging. The Infinity ECU is very cost effective with a lot of capability for the price.


The small, lightweight design of the AEM Infinity also includes quad flat no-lead components (QFN) within its circuit board, which maintains good electrical and thermal performance and improved reliability in adverse conditions.
The Infinity ECU comes with everything you need to install it into an S14 240SX with an SR20 including AEM’s sealed, weatherproof Plug & Play harness includes a Lambda connector, an AEMnet connector for communication with other AEMnet enabled devices and an auxiliary connector with a High-Performance DTM-Style 12P connector for adding common aftermarket sensors.
This is the harness used to communicate to your laptop for tuning and data logging.
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Wednesday, August 31, 2016 4:14 AM
Doing it right the first time is ALWAYS cheaper than fixing it later. I wish those Wiring Specialties Harnesses were available when I was building my S13 8 years ago. Would have saved me a million headaches.
Wednesday, August 31, 2016 8:59 AM
A "reliable SR20 Drift Car"... Man, that is the oxymoron of the century.

You must enjoy pain and never ending repairs. You are right, you do learn a lot. You learn not to modify an SR20.

Make sure that block can breath sufficiently so you don't go popping out dip sticks.

Oh, and read this!
Wednesday, August 31, 2016 6:29 PM
"You learn to not modify an SR20" right... which is why the proprietor of this web page (and the guy that said they suck in that article) who is an engineer for OEMs and could wrench on whatever he wants, is practically the father of SR20 modification in the US. Y'all ignant. Any engine can blow if its old and worn out. Hope you get her back up and running.
Wednesday, August 31, 2016 9:47 PM
What's wrong with the front wheel? Partially ripped off? I'm referring to the cover photo.
Cool ride, always liked 240s. Going through the motor is a blessing in disguise I think.
I have always thought rushing prep to make it to an event with no time for testing and refinement to just be a sure fire way to dissapointment. Don't stress there will be a drift event the weekend you get your car dialed, whether it's this weekend or 6 months from now.
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