Swamps 58v FICM fixed my issue

[ohman_stm]

My lo FICM voltage readings are no longer an issue, thanks to the Swamps 58v FICM I installed last night. Couple observations:

1) Maybe its just me, but there is now a new pep in the truck when on the acceleration, moderately, and more noticeable when I mash it.

2) Removal of the old FICM and installation of the new one - not difficult in theory, just more of a pain in the @ss awkward with the location of the unit and then trying to un-seat and re-seat the plugs into the FICM. That I would say was my biggest struggle.

3) I recall reading somewhere on this forum that the Edge Insight has a max reading for the FICM voltage parameter, don't recall what this is, but my understanding was for those with the 58v FICM, it would never show 58v. I now see a consistent range of 47 - 48 from the time I KOEO, to the time I shut down. My question is, with the 58v FICM, shouldn't I be seeing the highest possible reading that the Edge Insight will show? I'm not complaining, more just curious on why I would ever see 47v, when I should be getting more than that?? What am I missing?

Thanks to all the forum members for their inputs and advice.

-Tom

[Evil Eye]

Glad to hear it, Tom. I see up to 49V on my Insight CS with my stock (but resoldered) FICM. I would imagine you should see consistently 49V at the Insight, but 58V at the FICM. Sounds like you might want to call the guys at Swamps to confirm.

PS. A poorly performing FICM will cause all sorts of performance issues so even a 48V replacement will give you an improvement. Please keep us posted on what Swamps has to say.

[ohman_stm]

OK, spoke to Swamps - they verified the readings I am seeing via my Edge Insight are in fact accurate, and, as the unit was programmed to relay to the "engine computer". If I were to take a volt meter and monitor directly at the FICM, I would see 58v. They said their 58v units were intentionally programmed to "show/relay" 47 - 48v due to a number of customers who complained that the P0611 code was still showing up after installation of their 58v unit - for clarity, the code was showing for "out of range FICM voltage ABOVE normal" vice "out of range FICM voltage BELOW normal". Evidently, this generated enough confusion to prompt the above solution.

I now feel better that my FICM is doing what it is suppose to. I do plan to verify via the volt meter test, but also have confidence in the reputation of their products and great customer service thus far.

Hopes this thread is useful to those considering this upgrade.

[Evil Eye]

Good to hear.

[alandells]

I recently replaced my FICM with the 58v and I can't believe the difference. I agree that it is a pain in the @ss to get the new one in but well worth the 5 minute struggle. My trucks runs like its brand new! I highly recommend these guys!