Divorced downpipe and turbo elbow

[Ed.williams5]

Divorced downpipe and turbo elbow

Hi guys I noticed on my car that it had a divorced downpipe/turbo elbow.  I am just curious what is the bend fit if any of a divorced vs a regular 3" pipe.

[KiwiRS4T]

I gather this is a US term for what we call a split dump. Not sure what your question is though? 

OK I guess bend fit means benefit. The theory is that splitting the wastegate outlet from the main exhaust will improve overall flow. Done properly this should be the case but in some cases the wastegate flap can catch impacting on boost and so a bellmouth is often preferred.

[Ed.williams5]

Sorry didn't realize my phone had autocorrect to the wrong words kiwi. 

Yes thay was my question odd thing is my turbo elbow is not split I will see if I can get a photo.

[Ed.williams5]

[KiwiRS4T]

From what I can see on the photo that looks  like its not a split dump but just a way to take twin exhausts to the rear. If so maybe  not the most efficient  set-up.

[Ed.williams5]

That's what had my confused kiwi. As the photo shows its just a regular elbow which goes to a 3" collector then to the middle section which is two separate pipes.  These then merge back together and collect into a 3" collector where it mates to the test pipe/tail pipe section.

My only thought is maybe this is done for clearance? 

 

Either way I may start looking for a different downpipe option which is just straight 3" from the 5 bolt turbo flange to the test pipe