I have a Swamp's 58v FICM I got last year at this time. My truck was in BD's shop getting an EGR delete when the FICM arrived so I took it over to the shop to have it installed and flashed. Mine throws the p0611 code, I think that's it, and it actually only read 54v when it was installed. It was $500 cheaper for me to get the Swamps unit then a replacement from Ford. The only performance increase I saw was it wasn't dead in the driveway anymore.
Dave when a FICM is sent in you don't get the same one back correct? So is the version and whatever else read off the old FICM that is sent in so that the modded one returned is correctly "married" to the PCM? I have an '05 Ex and was told the coding is different then the '05 pickups.
SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust syatem, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.
I got mine fixed at FICMrepair.com.
Ed did a GREAT job.
He said that the 58v can make them less reliable ?
I went with the upgraded repair for $325.
My FICM is also tuned from PHP and that made a nice improvement and a 1-1.5 jump in mpg's.
Andy 2007 4X4 F350,6.0 PSD, Lariat, CC, DRW, 9' Knapheide body, stainless steel ladder rack, SCT with custom tunes, Banks turbo back, ARP's, ITP RR, Airdog II, Powermax with Billet Wheel, Firestone air bags, Autometer gauges( pyro,fuel pres,water temp,boost,trans temp), CCV mod.
Swamps Pionered the 58volt mod on the ficm and i have yet to see it less reliablem, We hae over 150-200k miles on the test truck with one on it. I agree on a moded truck i noticed little diffrence, but my sotp meter sucks however on a bone stock service truck i have noticed huge diffrences. So much that i do not even keep 48volts in stock anymore i talk everyone into upgrading to the 58 volts. And if you send yours in to be moded you will recieve yours back