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installing a 4" downpipe, ??

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Old Oct 21, 2010 | 11:06 AM
  #1  
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From: Kendallville
installing a 4" downpipe, ??

what is the easiest way to make more room to fit a larger downpipe.
 
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Old Oct 21, 2010 | 11:17 AM
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Originally Posted by jacob_powerhouse
what is the easiest way to make more room to fit a larger downpipe.
Cut out the firewall and floor board area and create a tunnel. Pretty much the only way I have heard of guys to fit a 4in DP. And by the way its not worth it. Plenty of guys making lots of power with a 3 inch DP.
 
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Old Oct 21, 2010 | 11:35 AM
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Originally Posted by tjbeggs
Cut out the firewall and floor board area and create a tunnel. Pretty much the only way I have heard of guys to fit a 4in DP. And by the way its not worth it. Plenty of guys making lots of power with a 3 inch DP.
Tim nailed it. I know a guy who modded his firewall for a 4" DP and said it wasn't worth the effort involved.
 
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Old Oct 21, 2010 | 02:23 PM
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I have been thinking about doing a 4" DP when I do the turbo, but looking at it I'm not sure it would be worth the effort. You'd have to create quite a tunnel to fit it in there. Maybe just do a hood stack and not have to worry about a downpipe! LOL
 
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Old Oct 21, 2010 | 05:13 PM
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Originally Posted by strokin'_tatsch
I have been thinking about doing a 4" DP when I do the turbo, but looking at it I'm not sure it would be worth the effort. You'd have to create quite a tunnel to fit it in there. Maybe just do a hood stack and not have to worry about a downpipe! LOL
Its a TON of work to clearance the firewall for a 4".



 
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