I think it's for smog in all 50 states. The rear cylinder muffler has a Cat converter and It makes sense that some front gases need to be cleaned.Pardon my ignorance,
My mufflers are connected by a flat black pipe about 1" in diameter.
What is the purpose of this? I live in California, is this for smog?
When I get new pipes will they have the same connection?
Yea! What he said:agree:The cross over, is more or less a balance tube to equal out the exhaust pressure.
* Equalize pulses for less backpressure and turbulence
* Help quiet system
* Reduces horsepower loss
* Enhances torque
What's a "Balance Tube"? Do I want one?IF YOU HAVE DUAL EXHAUST, AN "H" PIPE, OR BALANCE TUBE, can aid in reducing that resonance, or drone. The consensus is that they 1) reduce noise and 2) improve low-end torque. A common misconception is that exhaust gases freely pass back and forth between the two exhaust systems if a balance tube is employed. This is not so. In operation, this short pipe serves mainly as a plenum, or type of resonance chamber. This compliments the plenum found in the intake manifold where both cylinder banks are already "connected". The resulting dynamic feedback balances the sound waves which pulse throughout the intake and exhaust tracts when the intake and exhaust valves open and close. This improves scavenging, and results in a smoother running, and quieter engine. The underlying physics and dynamics of the relationships between intake runner length, exhaust tube diameter, and length, are deep, but in a nutshell, it works for you in good ways.