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post #1 of 13 Old 04-12-2011, 10:49 AM Thread Starter
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i was told

I was told that there is no 4 inch downpipe that doesn't hit the firewall on my 04 F250 ! Is this true, and if not can someone post a link to where I can get one.

Second is there a certain coolant that is better for our engines ?
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post #2 of 13 Old 04-12-2011, 10:56 AM
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All 4" downpipes will clear the firewall on the 6.0's. Coolant needs to be a CAT ELC coolant with an EC-1 rating. Also need a gallon of Restore and a gallon of Restore Plus to do a proper flush. You can't just drain the gold coolant out and refill with ELC.

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post #3 of 13 Old 04-12-2011, 11:08 AM Thread Starter
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I had a bully dog 4 inch on my 03 and it didn't clear
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post #4 of 13 Old 04-12-2011, 11:15 AM
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Quote:
Originally Posted by ClutchR16.0 View Post
I had a bully dog 4 inch on my 03 and it didn't clear
I have Silverline 4" and fits perfect.

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post #5 of 13 Old 04-12-2011, 11:46 AM
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I've got the Summit 4", it clears the firewall.

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #6 of 13 Old 04-12-2011, 11:52 AM
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I guess we can assume that your 03 was a 6.0 and not a 7.3?

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post #7 of 13 Old 04-12-2011, 12:19 PM
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some 03-04's do need to be clearanced for the 4" downpipe. 05-07's supposibly have a little bit more clearance. I just put a 4" on mine that connects right to the factory exhaust....it didnt fit bad, couldve got it fit better if i had an extra set of hands, and tried harder but i just recieved my MBRP turbo back straight piped exhaust with 3.5" DP so it might be coming off....

Totalled
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post #8 of 13 Old 04-12-2011, 12:50 PM
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4" will fit, it isnt at fun as a 3.5 to instal!

Colin
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post #9 of 13 Old 04-12-2011, 03:20 PM
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I have the MBRP kit and it's awesome.

Brian


'05 F250 Harley-Davidson

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post #10 of 13 Old 04-12-2011, 03:58 PM
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i have the mrbp 3.5 down and 4 rest of the way

04 F350
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