Exhaust question related to diameter w/various upgrades - Ford Mustang Forum
 
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post #1 of 3 (permalink) Old 03-27-2016 Thread Starter
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Exhaust question related to diameter w/various upgrades

Hi guys, I had an Outlaw Flowmaster catback which has 3" tubing.

Enjoyed it for a while but the drone was starting to fry my brain and God knows I've lost my fair share of brain cells in my day already ... Anyway ... Previous catback was a Borla S-type, 2.75" tubing. Had a reputable muffler shop weld the stinger mufflers to the flowmaster pipes. Working great and sounds awesome.

On order I have BBK ceramic 1 3/4 LTH w/ O/R xpipe and a BOSS 302 intake manifold that I plan to install next weekend. (Sweet!)

Can you think of any issues I might encounter with the new headers going into an O/R xpipe, 3" UNTIL I get to the mufflers which is 2.75". Since I'm still NA, I'm thinking no worries but thought I'd get a few 2nd opinions.

Side question, I know a bone stock 'stang with an 85mm throttle body see's little gains but what about an upgraded exhaust and intake such as mine? Also running with a Steeda CAI.

Thanks guys.

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post #2 of 3 (permalink) Old 03-28-2016
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Until you add some sort of forced induction there is not going to be any gains going to anything bigger.


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post #3 of 3 (permalink) Old 03-28-2016 Thread Starter
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Quote:
Originally Posted by Firestorm View Post
Until you add some sort of forced induction there is not going to be any gains going to anything bigger.
That's what I thought but my main reasoning behind my post was will I actually HURT performance in any way with the entire exhaust being 3" except the mufflers which are 2.75".

Probably a stupid question but more of a peace of mind thing. Thanks.
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