Good to hear about Swamp's IDM. I don't think I'll get their modded one, but I just purchased some things to do the voltage mod myself. If all goes well I have 4 to do on my family's trucks. I had heard about the voltage mod and somewhat grasped the concept, but I was unsure about the frequency mod.
I did some looking and found this link from Swamps which describes just about everything. High-Performance IDMs by Swamp's Diesel Performance Then if you look there are a bunch other related links on the same page. Might take a few times reading it before my head stops going like this -> 
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Thomas H.
'97 F-250 CCSB 7.3L Auto, Gauges, Modded H2E, 285/200% sticks, 7.3L IC, Stealth Dual HPOP, Pheonix chip
'03 F-250 CCSB 6.0L Auto, Gryphon CTS, FICM tuning by PHP, Powermax
Last edited by F-127; Sun, April 11th, 2010 at 11:07 AM.
Reason: I said I was unsure about the voltage mod, meant frequency
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