FF exhaust

It is possible to get negative performance as the turbulence at the joint is higher than otherwise.

 

Forgive my ignorance, but why would this be any different from the stock pipe/s? they must join/dis-connect at the same place, correct?

thanks for any insight!
Cheers

 

The flow is actually different as a result of the different mixing of the flows from the two cylinder banks. The fact that the sound is different is a tip off that the flow is different. Since the sound is a function of the flow, you can't change the sound without changing the flow. That change may be small but it is incorrect to say that there is no change in performance. And it may even be negative if the turbulence at the "X" intersection is increased relative to no X-pipe. Turbulence means that energy is being taken out of the flow which raises the need for the engine to push harder to get the gases down the pipes.

Fluid dynamics is complicated business and it is often hard to predict what happens when you change a flow. That's why there are big computer codes for it.

 

Many thanks!!

I'm going to stick to my capristo rear box and leave it for now

Cheers!

 

Enjoy!!

 

Wish I'd tried the system without the x-pipe initally, so I had a before and after comparison! Curious to know what the sound difference is.

 

Thank you for your comments, glad to hear you love the exhaust. As far as the X-Pipe goes we do not have an x-pipe for all of our exhausts, only for the ones that require it to improve the sound. Antonio Capristo always has a reason for producing extra product either for performance gains or for sound improvement. Im sure you would have wanted the x-pipe sound over just having the muffler.

Erik