Exhaust Crossover Diameter/Size

[HellsBells]

So this is getting a little picky here but, last time I removed my Pypes H pipe, I noticed that there is actually not really a large hole between the two pipes where the H connects.

While the diameter of the crossover looks to be 2.5" just like the rest of the pipe, if you look into the crossover, it looks like they welded the center " - " part of the H to the pipes, then used a hole saw to make a hole on either side.

Last time I measured the hole, it was probably about 1" in diameter.

Would there be any benefits or downsides to making that hole larger and effectively have a larger crossover diameter?

Does the smaller diameter cause the exhaust to behave more like true duals since there isn't as much space to "equalize" the pulses or is a small hole sufficient?

Will it increase drone/noise?

Will it sound cooler?

Will I gain at least 50 horsepower?

Will Darren ever drive his car?

Thanks guys!

 

[DRock]

Will Darren ever drive his car?

Thanks guys!

I am no help but lulz

 

[ExSRT8Guy]

Thought my first post would be a question, not a reply Enlarging the crossover should reduce drone, sound better, and add power, though none of these to a huge degree. Do it!

 

[AnotherS197GT]

Doubtful it will make a difference. I blocked mine off once to change the tone. No difference in power that would have been measurable. Right now I have a factory bullitt H on the car which includes a little restrictor plate.

 

[HellsBells]

Doubtful it will make a difference. I blocked mine off once to change the tone. No difference in power that would have been measurable. Right now I have a factory bullitt H on the car which includes a little restrictor plate.

How did blocking it off change the tone? Drone? Less drone?

 

[AnotherS197GT]

How did blocking it off change the tone? Drone? Less drone?

I never ran the offroad set up without the crossover blocked off. It's supposed to make it really burble. I loved how it sounded, but it leaked at the manifold, so I threw a Bullitt mid on it. Still sounds good with a nice deep tone.