Exhaust Pipe Diameter
 

If I run a 2.5" diameter pipe and split it into a Y-section for a dual exit, what pipe diameter would I need for the pipes exiting in order to keep constant flow?

I figured the diameter of the two pipes would have to be around 1.75" diameter. If you go from 2.5" - 1.75"x2, would that change the sound dramatically? Would it drone, sound to raspy, high pitch... or worse.... sound RICE?

Can anyone chime in and post your knowledge / opinions.

Mine is 2.25", but you could continue with the 2.5". It really doesn't matter since it's such little amount of pipe.

Nameless does this (1.75 after split), and IMHO, its one of the best sounding exhausts.

I saw that on their website, which helps with the theory I had. I would like to hear their dual muffler delete setup that they showed on their facebook page. In early June they said they would have something by the end of june, but still no cigar. I also believe Berk Technology was coming out with a dual muffler delete setup, but I haven't seen or heard any news from them..

Anyways, my idea was to do a muffler delete, use 2.5" pipe from resonator spliting into two 1.75" or 2.0" diameter pipes, then installing a 2.5" test pipe.

CounterSpace Garage have a similar setup and it sounds sweet. You can see their videos on youtube, they have two videos with berk technology muffler deletes and 2.5" test pipe.

I think there is video of Nameless muffler delete, let me see if I can find it.

Edit: here is Nameless explanation on the pipe runs:

http://www.ft86club.com/forums/showp...3&postcount=95

ahh yes. I remember reading that long time ago. Thanks. It's good to know, the last thing I need is drone.

I have heard videos of their single track pipe, and I like how it sounds, but I don't want to have an empty hole on my rear bumper:lol:... (you get it? that can be misinterpreted). Have they recorded videos or sounds of how their dual muffler delete sounds like?

^^ LOL

I tried looking around and couldn't find any. I think maybe @Neziah who was the one that tested the offset, may know if they took video of the dual muffler delete.

https://www.youtube.com/watch?v=C5JB...e_gdata_player

https://www.youtube.com/watch?v=xJu_...e_gdata_player

Fix to Embed them here.

[ame="www.youtube.com/watch?v=C5JB_m2BLJg"]BRZ/FR-S Berk Exhaust Sound Clips (Camera on car) - YouTube[/ame]


[ame="www.youtube.com/watch?v=xJu_yxBFxiM"]BRZ/FR-S Berk Exhaust Sound Clips (Camera behind & outside car) - YouTube[/ame]

Yeah Jason took some video of the Dual Tip delete that same night. I do not know if he ever uploaded it or not. It really sounded cool. It had the same tips on it as the regular Axle back