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Old 01-19-2012, 02:32 AM   #103
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8 lbs of boost and the motor let loose. That sounds like a bad tune. No wonder you got the numbers you did, Majestic had the tune on the ragged edge. Just another reason you dont take an American car to get tuned by import guys. Sure they know what their doing but on cars that are designed to handle boost from the get go.
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Old 01-19-2012, 04:22 AM   #104
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Boost and meth work hand in hand. Broke open the block no pistons left. Not really but more then one was gone. Y'all would be very suprised how hard I drive
Well I think your hard driving contributes to this problem lol. But hey it's your car and you gotta pay to play brother.
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Old 01-19-2012, 04:26 AM   #105
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Well I think your hard driving contributes to this problem lol. But hey it's your car and you gotta pay to play brother.
@8psi that motor should've been able to take the abuse all day long. Not like he was boosting double digits. Especially with meth.

Either the LLT is a really really mushy motor when it comes to boost and people better start worrying.... Or like someone said, your tune was horrible and you were detonating even with water meth.... which I have scarcely heard of at such low hp/boost levels...

You sure your water meth was WORKING?
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Old 01-19-2012, 06:29 AM   #106
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@8psi that motor should've been able to take the abuse all day long. Not like he was boosting double digits. Especially with meth.

Either the LLT is a really really mushy motor when it comes to boost and people better start worrying.... Or like someone said, your tune was horrible and you were detonating even with water meth.... which I have scarcely heard of at such low hp/boost levels...

You sure your water meth was WORKING?
I can get ANY cart to detonate... just takes a poor tune! Seen it plenty of times.

But you also bring up a good question... was the meth actually spraying? Does CJ have an AF gauge? What kind of AFR was the car normally running? There is going to be a lot more to this story than a blanket statement that the LLT can't take constant boost... No motor can take constant boost if you push it to far and lean on it to much.
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Old 01-19-2012, 06:31 AM   #107
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Hold on, your dropping a v8 into it?! I've been trying to find answers on how to this for the longest time, I gave up because of the wiring and computer aspect of it
If it can be done. Can you please help me let me know what I need? lol
I can get the motor and tranny
Of course it can be done... A good custom performance shop can pretty much do anything you want... Just have to have very deep pockets...
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Old 01-19-2012, 06:45 AM   #108
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Boost and meth work hand in hand. Broke open the block no pistons left. Not really but more then one was gone. Y'all would be very suprised how hard I drive
Sorry, I can't remember if you said...

What AFR were you running?

Do you have an AFR gauge?
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Old 01-19-2012, 07:19 AM   #109
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Air fuel was fine not much warning at all . Clunk for like ten minutes then boom
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Old 01-19-2012, 07:21 AM   #110
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Air fuel was fine not much warning at all . Clunk for like ten minutes then boom
Do you have a gauge? What was the AFR?
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Old 01-19-2012, 07:23 AM   #111
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Stayed around 1.03 wasvin green 99% of time
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Old 01-19-2012, 07:28 AM   #112
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Stayed around 1.03 wasvin green 99% of time
sounds like you are describing a narrow band? Did you have a wideband O2 installed?
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Old 01-19-2012, 07:38 AM   #113
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Out did both both I kept it on narrow band
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Old 01-19-2012, 07:44 AM   #114
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Out did both both I kept it on narrow band
You needed to use the wideband. Narrowbands are not accurate at WOT.

What AFR was the car tuned to with the meth?
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Old 01-19-2012, 08:16 AM   #115
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Yep. But look at the bright side lsx starts at 620hp at crank. Twin kit on that camm 14psi looking around 800rwhp
Nice, the lsx454 is a truly awesome engine I can wait to see the results.
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Old 01-19-2012, 08:19 AM   #116
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Spraying meth on a safe tune is one thing but tuned for meth (lean + timing) without a wideband and knowledge is asking for trouble. I would like to hear how the AFR was dialed in.
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Old 01-19-2012, 08:20 AM   #117
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You needed to use the wideband. Narrowbands are not accurate at WOT.

What AFR was the car tuned to with the meth?
Do you live in FL. I see a car like yours at the track occasionally.
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Old 01-19-2012, 08:22 AM   #118
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Was tuned for the Meth. But it gives me the option to get rid of the v6
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Old 01-19-2012, 08:23 AM   #119
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Sorry to hear this CJ...My original plan for my LLT was to drop a LS9 in it. Till I was told the computer and harness won't work. And that the mounts would have to be relocated. So I left it as this car was still new to alot of performance shops. Almost bought the engine and TR6060 glad I didn't. Wish you luck with this build, and so think now we have SOME knowledgable shops out there willing to play with the LLT.

I'm going to take it easy at first with my turbo's to let things break in. I only still have 6600 miles on the car since it's not a DD. I had Tracy also install a wideband A/F along with the boost gauge to keep things in check. Will also be running the Torq app 24/7 in the car just in case.

Wish you luck and start another thread when you start the build. This thing is going to be a beast. Hope to see it at CFIII!!
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