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1994.5 - 1997 7.3L Power Stroke Diesel  

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Old May 2, 2008 | 04:14 PM
  #1  
searay280's Avatar
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First Mod completed

Well, just completed my first mod on my 97 F350 CC 7.3, installed 3" DP. Drove it for a little bit but have not towed my boat yet with the mod. I can definately hear the turbo singing louder but the rumbling under the floor board is deafening. And, it's not a smooth rumbling, more of a gurgling sound. I have not noticed any performance improvement either.
 
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Old May 2, 2008 | 04:26 PM
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You wont notice too much performance difference without the rest of the exhaust system, but you'll get a bit faster spool...
 
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Old May 2, 2008 | 04:49 PM
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Originally Posted by searay280
Well, just completed my first mod on my 97 F350 CC 7.3, installed 3" DP. Drove it for a little bit but have not towed my boat yet with the mod. I can definately hear the turbo singing louder but the rumbling under the floor board is deafening. And, it's not a smooth rumbling, more of a gurgling sound. I have not noticed any performance improvement either.
The sound may be the down pipe hitting the cab did you make enough room for the new down pipe?
 
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Old May 2, 2008 | 05:26 PM
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Yeah, sounds like you might have some clearance issues. Also, throw the stock air cleaner box out and put in an aftermarket one or do the 6637 mod. Having that "free-flowing" intake will make the spool up faster.
 
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Old May 2, 2008 | 07:57 PM
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Talking

X3 what they said.
 
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Old May 2, 2008 | 08:05 PM
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deleted doble post sorry.
 
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Old May 3, 2008 | 12:41 AM
  #7  
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Yes, there shouldn't be noticable cab noise. It's hitting. Did you bend the seam back?
 
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Old May 3, 2008 | 08:12 AM
  #8  
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theres that big plug just past the bottom of the downpipe to get rid of too......
 
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Old May 3, 2008 | 10:24 AM
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Definatly clearance porblems. My did the same, dont just bend seam but hit it back a little. Do the 10k mod and shim mod and you will feel what the down pipe is supose to do !
 
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Old May 3, 2008 | 10:33 AM
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Now that you have done your first mod, you are hooked!!!
 
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Old May 5, 2008 | 12:15 PM
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Question

<TABLE cellSpacing=6 cellPadding=0 width="100%" border=0><TBODY><TR><TD noWrap>
Searay280 Where are you?, did you fix your problem? Let us know.

</TD><TD width="100%"></TD></TR></TBODY></TABLE>
 
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Old May 5, 2008 | 09:01 PM
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Sory guys, been away from he PC. No resloution to date, a buddy of mine who owns a muffler shop did the job for me so I plan on discussing it with him this weekend over a cold beer. Looking at the 6637 mod next. Afraid I might be hooked, but not as much as my wife. I just tell her that these mods will increase gas mileage
 
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