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Old 09-30-2014, 06:40 PM   #1
elimontfort
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Ligenfelter crank trigger conversion

http://www.lingenfelter.com/mm5/merc...3#.VCswFsu9KSM

Why would you need to run this on a swap? I see what it is for but if your are running a stock gm ECM that would negat the need for the conversion box correct? I'm assuming this is for someone running a 4.8 on a 5.3 ECM or vice versa?
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Old 09-30-2014, 07:53 PM   #2
ls1nova71
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Re: Ligenfelter crank trigger conversion

Quote:
Originally Posted by elimontfort View Post
http://www.lingenfelter.com/mm5/merc...3#.VCswFsu9KSM

Why would you need to run this on a swap? I see what it is for but if your are running a stock gm ECM that would negat the need for the conversion box correct? I'm assuming this is for someone running a 4.8 on a 5.3 ECM or vice versa?
It's for running a newer engine with an older PCM. Its easier than changing reluctors on the crank. I have heard there have been reliability problems with them though.
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Old 09-30-2014, 08:05 PM   #3
elimontfort
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Re: Ligenfelter crank trigger conversion

That's what I thought. I'm currently doing a lq9/4l80 swap on mine. I was looking at a buddies 74 jeep that he did the 5.3/4l65 swap on and he was running that. But he is using stock management so just kinda made me think why? He had a shop do it and they told him he needed it.
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Old 10-01-2014, 11:00 AM   #4
littlevictories
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Re: Ligenfelter crank trigger conversion

i was following a thread on HPT forums where it looks like they were gonna add code to make the switch in the OS, but it dead-ended.

about your buddies swap: i dunno why they wanted the box. maybe they needed to make a DBC OS work? I met a local guy that did just that…but he was getting ready to swap reluctors b/c the lingenfelter box was a turd. Caused multiple fails per week in his 5.3 swapped toyota wagon.
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Old 10-01-2014, 11:45 AM   #5
elimontfort
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Re: Ligenfelter crank trigger conversion

yeah thats what he his running but they can program that out correct? or use a dbc computer.
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Old 10-01-2014, 12:43 PM   #6
ls1nova71
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Re: Ligenfelter crank trigger conversion

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Originally Posted by elimontfort View Post
yeah thats what he his running but they can program that out correct? or use a dbc computer.
There are no DBC Gen4 applications, so if he was running a 2008-up 5.3, and wanted to run DBC, that's why they used it, hes running a Gen3 PCM with a DBC tune. You cannot tune the DBW out of the newer ECMs.
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Old 10-01-2014, 12:45 PM   #7
elimontfort
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Re: Ligenfelter crank trigger conversion

thats what i figured but you cant write that out of the PCM? just payed attention to the end of the post nevermind. thanks guys for the info.

Last edited by elimontfort; 10-01-2014 at 12:50 PM.
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Old 10-01-2014, 04:02 PM   #8
littlevictories
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Re: Ligenfelter crank trigger conversion

so the takeaway here is if you have gen4 and want to do a DBC, the best fix is to change the reluctor wheel.

correct me if i'm wrong. thanks.
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