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Old 10-26-2015, 10:42 PM   #1
BlackGMC
 
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What timing and AFR are you running?

So i am kinda new to the LLT DI motor. I have been slowly upping the timing. Right now i am about at 24* at wot. I am not sure what AFR to shoot for. I have read these DI motors like a leaner mixture than the typical Gen3/4 LS stuff.

The motor is bone stock, It is my daily driver so i am not looking to break records or mod it.

Thanks in advance.
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Old 10-26-2015, 11:25 PM   #2
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Technically you are modding it. Why not mod, the LLT handles mods just fine.
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Old 10-26-2015, 11:36 PM   #3
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True but i am just looking to tune it. Basically get get it running better/smoother. I have made good progress removing the dead spots in the thrrottle and it is alot peppier now. Just wanting to keep it safe. I have another toy that goes alot faster.
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Old 10-26-2015, 11:55 PM   #4
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I run 26 degrees on 13.5 PSI of boost and 0.88 lambda with no heating problems.
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Old 10-27-2015, 12:39 AM   #5
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Are you running meth? Wow that is lean. I have heard these DI engines like it leaner.
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Old 10-27-2015, 09:38 AM   #6
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Quote:
Originally Posted by BlackGMC View Post
Are you running meth? Wow that is lean. I have heard these DI engines like it leaner.
Yes, without meth it is 17 degrees on 10% Ethanol at 0.98 lambda.

With the right cam tuning, it can run over 30 degrees while 0.88 lambda. Probably even leaner but these engines don't have oil coolers.
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Old 10-27-2015, 06:19 PM   #7
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Hey thanks for your responses, i appreciate it. I am just trying to get a general idea. Your setup helps put things in perspective.
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