2001 4.8L dual-tank OS

DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
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My friend and I swapped a 2001 4.8L into his old 1984 Ford pickup, which has dual tanks. I would like to get the GM ECU controlling them, but I can't seem to find a 2001 OS that supports dual tanks.

His current OS is 12208322, so if someone has that with dual tanks, I can segment swap, but I could just copy/paste the tune over to a different OS if necessary. It is running the stock 2001 GM dashboard, so probably best to stick to 2001-2002 tunes.

Anyone have one laying around, or know where to look for one? It seems all the old tune depots have shut down (holdencrazy, etc) :(
 
THEFERMANATOR

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
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DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
3,681
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Boise, ID, USA
THEFERMANATOR said:
The suburban with dual tanks runs the transfer pump to move fuel from the rear to the front. Your best bet is going to be to find a 6.0l dual tank tune from a 3500 cab and chassis pickup.
Click to expand...
That's actually what we want to happen. We plumbed the main high pressure fuel pump and return into the front tank, and a transfer pump from the rear to the front tank. I managed to locate a 2001 suburban tune, I'll see if it works.

Sent from my E5823 using Tapatalk
 
THEFERMANATOR

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
3,890
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ZEPHYRHILLS, FL
The pickups and burbs both work the same way transferring fuel forward. The only difference is the suburban used 1 filler hose for both tanks while the pickups used a seperate filler for each tank. Since they worked that way, the suburban tune is not as picky about seeing the fuel transfer at a specific rate, so it is alot more foregiving.
 
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