i was told

ClutchR16.0 · #1 (**permalink**) 04-12-2011, 10:49 AM

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 ?

**dhanna6powerstroke** · #2 (**permalink**) 04-12-2011, 10:56 AM

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.

ClutchR16.0 · #3 (**permalink**) 04-12-2011, 11:08 AM

I had a bully dog 4 inch on my 03 and it didn't clear

**dhanna6powerstroke** · #4 (**permalink**) 04-12-2011, 11:15 AM

Quote:

Originally Posted by ClutchR16.0

I had a bully dog 4 inch on my 03 and it didn't clear

I have Silverline 4" and fits perfect.

Lilpooh · #5 (**permalink**) 04-12-2011, 11:46 AM

I've got the Summit 4", it clears the firewall.

**dhanna6powerstroke** · #6 (**permalink**) 04-12-2011, 11:52 AM

I guess we can assume that your 03 was a 6.0 and not a 7.3?

JasonAmericanBulldog · #7 (**permalink**) 04-12-2011, 12:19 PM

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....