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So, I will be finishing this post (by updating this specific post) in the near future, but I wanted to get some basics out there.

First off, the why:

There is no reason to go AEM V2 anymore, unless you find a deal on a used one

Price - Infinity can be had for $1200-$1300 for the EMS itself, and Boomslang makes a plug n play harness for our cars for $600. About the same as a plug n play V2. (you can also do a plug n pin kit for $70 plus the cost of wires and your time, or a mini harness (flying lead) for $140.

Features - Infinity does everything V2 does, but does it all better with a better tuning setup (VE). It also does traction control (you'll have to pin 4 wires under the dash for this). It is completely waterproof and can be mounted in the engine bay. It has USB logging (logging directly to USB thumb drive, which is included). There is more that I am missing, but as you can see, this is a great system.

Additional requirements - aside from the basics required for a V2 (MAP, coolant temp, intake temp), you should also have a 0-100 psi fuel pressure sensor wired to the Infinity. It uses fuel pressure as part of its VE calculation for easier tuning and better drivability out of the box.


I will post wiring diagrams soon, as well as a couple base "session" files that should start and run any IS300 with just a few modifications to your current setup.


Where to mount it: The Infinity is fully waterproof and can be mounted essentially anywhere. I chose to mount mine underneath the drivers seat, as that is where I already had ran wires for the V2 I replaced. Some things to note - there are two USB connectors on the front of the Infinity. The smaller one is for laptop tuning and logging. The larger one is for USB stick logging. Infinity comes with a short, waterproof cable for the USB logging stick. The end that plugs into Infinity is waterproof, the other end is not - it will need to be in the cabin somewhere. Infinity does not come with a waterproof laptop cable, though they are offered. There is room to mount Infinity 6 by the master cylinder if you want it in the engine bay - it is quite small.
I have a 2003 is300 auto doing single turbo 2jzgte & r154 swap. Bought aem infinity and suprastore plug and play. What harness and ecu should I run? My stock stuff or aristo? Pretty confused because every thread I read says something different. Have seen you help many people on here, thank you!
 
I have a 2003 is300 auto doing single turbo 2jzgte & r154 swap. Bought aem infinity and suprastore plug and play. What harness and ecu should I run? My stock stuff or aristo? Pretty confused because every thread I read says something different. Have seen you help many people on here, thank you!
Check out panicwire.com for a Link ECU, they have a plug and play harness with ECU for our cars.
 
I have a 2003 is300 auto doing single turbo 2jzgte & r154 swap. Bought aem infinity and suprastore plug and play. What harness and ecu should I run? My stock stuff or aristo? Pretty confused because every thread I read says something different. Have seen you help many people on here, thank you!
Welcome! Glad to see you actually bought the right stuff and did not try to build your supra on the cheap without engine management. Good luck.
 
Stock is needed for the everyday stuff, unless you have a high end stand alone. Is the AEM a piggyback? Sorry i cant remember.

If your power asperations aren't that high i know guys over here who run both the stock for the normal IS stuff and run the aristo ecu for the engine management side, but the AEM is probably going to do a better job if you already have bought it.
 
Bought aem infinity and suprastore plug and play. What harness and ecu should I run? My stock stuff or aristo?

You need to run the stock IS300 ecu so everything (dash, AC, etc) functions. You can completely remove the stock ecu, but then there’s some rewiring to get the creature features working. I haven’t seen the SupraStore harness, but I bet that it “butts” in between the stock ecu and its harness. It will give the Infinity control of spark and fuel, and share TPS, Crank and Cam sensors, ECT, ( there’s more but you get the point). It’s a funky hybrid 2 ecu setup, but works. You can’t control idle this way though. The PNP harnesses are a good start but they leave a lot of control on the table. I’ve got my Infinity setup to control DBW, and idle up on AC call. You can do dbw based traction control as well.


Is the AEM a piggyback?
It’s a standalone, but used in a piggyback wiring style. It still has complete control over fuel and spark.


panicwire.com for a Link ECU, they have a plug and play harness with ECU for our cars.
I think he’s already bought an AEM Infinity. But yeah, I’d advise the new PnP Panic Link too. Not dicking with two ecus and keeping all stock functions would be badass.
 
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