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post #1 of 8 Old 03-18-2014, 09:18 AM Thread Starter
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New member with exhaust questions.

02 7.3 F 250 CC SB with AFE Pro Dry S Stage 2 Ez Intake System and TS Performance Switchable 6 Position Chip. Difference in 4 and 5 inch turbo back exhaust is $66 so not much of a factor. Is there any down side to the 5 inch. Pull 4k boat. What are your thought and experiences?
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post #2 of 8 Old 03-18-2014, 03:35 PM
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The only difference is sound. Have heard that the 5 inch has highway drone if straight piped. I have a 4 inch straight pipe turbo back and no problems with drone. Find someone with 5 inch and see if you like the sound.

Last edited by strokin-7.3; 03-18-2014 at 03:55 PM. Reason: corrected by 897.3alltheway
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post #3 of 8 Old 03-18-2014, 03:45 PM
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5" it will only be a sound difference , dont think it will drop egt's anymore then a 4" would

-Jeremy

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post #4 of 8 Old 03-18-2014, 03:54 PM
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Originally Posted by 897.3alltheway! View Post
5" it will only be a sound difference , dont think it will drop egt's anymore then a 4" would
I have been corrected. Thanks 897.3.
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post #5 of 8 Old 03-18-2014, 04:51 PM
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I have been corrected. Thanks 897.3.
5" would drop egt's if you were making big HP , but for near stock its just gonna be a deeper tone

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post #6 of 8 Old 03-18-2014, 05:54 PM
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All these trucks drone at hwy speed it's just the tone, the 5" is deeper tho

-Kris-
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post #7 of 8 Old 03-18-2014, 10:27 PM Thread Starter
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With stock 3.5 inch going to 4 inch would be about 15% larger while 5 inch is 45%. Will be using a muffler in the system.
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post #8 of 8 Old 03-22-2014, 05:04 AM
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I have the afe 4 inch straight pipe 3.5 down pipe. I think the 4 inch would be a pain not to have rubbing on mine. Tight fit. My 3.5 down pipe was good fit and 4 inch straight back sounds perfect. Nothing like hammerin it down and hearin it roar. Gotta be careful downtown turns so many heads esp the cops....lol. id like to hear a 5 inch though cause my 4 sounds pretty killer id say. Hardly any drone on mine but then again that type of stuff has never really bothered me cause I always have the radio up so loud haha!

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