Recently I purchased a Greddy Emanage Ultimate which is working great for me! The one big problem for me when I first got it was all the wiring that had to be done on it. I am not a huge fan of spending hours under my dash splicing and soldering wires. I contacted a Greddy authorized dealorship and ask them to special order a plug and play harness for me. It took about a month to get here, due to being a brand new product, but was it worth the wait!! Everything comes pre wired not a single thing to cut and splice. Also comes with a Ignition Adaptor which cancels the CEL light. After you remove the glove compartment the ECU is right behind it and it is just a matter of taking out the car harness and plugging in the Greddy Harness to both ECU and original harness and thats it your done!! Everything on my EU seems to work great with no problem. I am having trouble getting the knock sensor to work but I think that involves my settings not the wiring. Overall I give this product a 9 out of 10. It is a bit costly (170 bucks) and it does take some time to get but other then that I love it! Made my life so much easier when it came to installing my EU. This is a great product and I recommend it to anyone using the EU.