I do a lot of Etunes for customers all over the world and wanted to share a little DIY video of exactly how to correctly setup/sync the ignition timing on the AEM Infinity engine management systems (infinity 6, 8H, 8, 10 and 12 all use the exact same sync process.)
**Modern day alternative to the Infinity ECU would be the Haltech Nexus S3 the aem infinity line up has been discontinued.

Check out the Blog AEM Infinity Ignition Sync for a full step by step process and explanation behind exactly why you always need to sync ignition timing before you start tuning.

You will need a timing light to perform this task and it will help to have an extra set of hands/eyes to work the timing light at the engine. (It is possible to do this alone but you will need a long USB cable so you can be connected to the Infinity/view the screen/key board and use the timing light at the engine.

https://www.youtube.com/watch?v=BDks...ature=youtu.be

 

Sweet great post I gotta dig into all the info later when I get a chance. Thanks!

 

Did you ever end up getting your car up and running on the AEM?

 

Yes after it sitting for a while recently its back on track. But it is still a bit rough on the start up and possibly a bad boost solenoid. So on my start up it takes about 3-4 cranks to "sync" and then it fires right up after about 1 crank. I know it isn't getting fuel or spark while it is syncing. Any idea on how to make it sync faster?I've seen videos of evos running infinity that start up just like stock

 

your Infinity is taking a few cranks to sync?

try a nice fresh battery with plenty of cranking power, i have seen slight voltage drops cause a delay in sync. Besides that there are a few things to address in the tune that can help.

 

Yes the "sync state" and "start probability" remain at zero until 3 or 4 cranks. I tested my battery and it's at full potential. Thanks a bunch for your help! Already had my starter go out recently :/

 

Are you on the standard trigger disk?

 

Yes I am. I was actually planning on messaging you Boz since I've seen a few of your knowledgeable posts around and even your start up vid.

 

So the trigger disk will help, since it has more teeth it can sync faster. But you will still have between 1-3 throwaway cranks. I have had some super fast starts, and I have had some slow starts. But most of the time for me it is in the 1-2 cranks area to get sync'd. Also as the weather cools down and being on E85 I will see slower starts, just because I have not spent a lot of time tuning in the cold. Since we are socal, our cold is like 50*

 

Hmmm I was hoping that I could get a decently quick start with my stock one but I'll have to look into that. My starts are the same length (5ish cranks) everytime and I've never had it start any faster. I'm still on pump gas for now

 

Did you ever have your stock disk in with your infinity?

 

Nope. I have had the 12tooth disk in for so long I dont even remember not having it.


You should be able to get it down to 2-4 cranks.

 

I should be able to get it down to 2-4 with the 12 tooth?

 

I'd rather not have to delete my balance shaft

 

I'm also on the stock trigger wheels and cranking was a bit slow with my old 500cca battery. I modified an EFI battery tray and installed an Odyssey 1100 battery . Cranking improved alot and is acceptable now in any conditions with the Infinity.
Most aftermarket ECU's don't like low voltage so I would make sure you have a strong battery/alternator.

http://www.odysseybatteries.com/batteries/pc1100.htm

You also want to get your cold and hot start fueling correct before going to Ethanol.

FWIW, I put a Motec m130 on my car and it starts as quick as stock without any delays.