rookie exhaust question

[nolanator]

My car has a 3" downpipe. does that mean it will only accept a 3" exhaust or will the 3.5" and 4" units i see advertised have a flange that mates to the 3" downpipe?

 

[TRICKSIXPA]

The flanges should be the same but why would you need an exhaust pipe larger than 3" is beyond me?? I have a 3.5" down pipe and still use a 3 " exhaust.


Sent from my iPhone using Tapatalk

 

[Pronto]

Your engine will never make enough exhaust to need anything more than 3" pipes. Don't use Flowmaster style mufflers. They are restrictive.

 

[nolanator]

I was meaning to say 3" Exhaust and 3.5" downpipe. I'm also searching for exhaust options for my F250 and I got my diameters confused lol. Thanks for the help

 

[Pronto]

3" downpipes go to the 9s so 3 1/2" isn't needed either.

 

[nolanator]

even with a single shot exhaust?

 

[Thundertoad]

The flange on the 3" rjc test pipe bolts directly to their 4" single shot.


Sent from my iPhone using Tapatalk

 

[V6sleeper]

even with a single shot exhaust?

yup,even with a single...I have seen many cars all over the 10's with 2 1/2" exhausts and 3" dp..

 

[Thundertoad]

The flanges should be the same but why would you need an exhaust pipe larger than 3" is beyond me?? I have a 3.5" down pipe and still use a 3 " exhaust.


Sent from my iPhone using Tapatalk

I would say vanity and exhaust note, not out of necessity. I personally don't like the look of dual exhaust and prefer the look and simplicity of a single shot. The 3" single shot I've read drones too much, so I went with the 4" RJC single shot. I love the look of it and it sounds great too with very minimal drone. My combo doesn't NEED it, but I like the look and sound of it and at the end of the day, I'm the only one that needs to like my car.

 

[Mr.Spool]

The 3" single shot I've read drones too much,

don't believe everything you read

 

[Thundertoad]

Hah! I agree there. I should have included that I listened to a lot of YouTube videos as well before making my choice. So it wasn't just reading.

Plus, if it's on the Internet, it's gotta be true! [emoji6]


Sent from my iPhone using Tapatalk

 

[Mr.Spool]

Plus, if it's on the Internet, it's gotta be true!

I hear that,the combo has a large effect on the exhaust note.

 

[Pronto]

Look at your turbo's exhaust hole and wastegate hole. All the exhaust from the engine has to go through those 2 holes.
As far as exhaust tone goes. Recently I was at a dyno day. One of the cars had a brand new 64/66. They didn't port the hole so it was impossible to control the boost. We popped off the downpipe and opened up the hole with the turbo on the car. We started up the engine to blow out the chips. The engine was damn quiet. I've heard plenty of open exhaust n/a engines and even at idle they were very loud. The turbo really changes the sound of the exhaust.