Jardine Exhaust

[skippy344]

Hey fellow XSives,

I have two questions to ponder:

1. I see Jardineproducts.com sells a replacement 4 into 2 exhaust system for our bikes, but I noticed that instead of headers 1 & 2 exiting the left, they have headers 1 & 4 exiting, with 2 & 3 exiting the right. This follows with the coil wiring, is there some performance advantage to this arrangement?

2. I am running straight pipes, and my bike runs well and I like the loud sound. It is especially helpful here in Texas when all I have around me are 4-wheel drive diesel "dualie" pickups who "can't" see me! But when I let off the throttle, (which is seldom! ) the pipes "pop" a lot on decelleration. I have the original air box. Is this OK and normal, or do I need a little backpressure?

Ride safely folks,

greg

[Dragonrider]

The "poping" is often an indicator that you have an exhaust leak. Air can enter and cause ignition of unburned fuel in the pipes.

[skippy344]

Possibly where the slip-ons meet the "Y" pipes?

[Pat Kelly]

The '1-4 right, 23 left' setup (following the coils like you said) allows for better scavaging on the exhaust gasses. The ehhaust pulse from the cylinder helps to 'drag' the next cylinders exhaust pulse. The susyem also has a crossover between the mufflers that does the same thing between the two sides where the (needed) backpressure is. This crossover provides lower RPM 'oomph' .
I have these pipes on my 78 E and they're great performance wise. I have found I have slightly less cornering clearance than with stock. I also have to modify the left mounting bracket on my 3 point caseguards (the 2 point fit fine).
I hope this helps.