Does external wastegate dump increase effective exhaust size under boost?




91_427 Member 427/2000 490/2000

posted 05/09/13 02:17 AM
Quoting blkchr91:
So I have a 2.5 inch exhaust from essentially the turbo back. I also have an open cutout pre cat which is loud and getting on my nerves.
I never stopped to think about whether or not the 1.5 inch EWG dump adds to the 2.5 inch exhaust for a total of 4 inches diameter under boost.
If not, does it at least equal a 3 inch exhaust under boost? I have been googling this and it seems like 2.5 inch exhaust + 1.5 inch exhaust = 4 inches under boost period. That would be too good to be true but I would be happy if it were.
Thoughts?
Thanks
One 2.5 inch pipe plus one 1.5 inch pipe does not have the same flow as a 4 inch pipe because the areas of the two pipes is still less than the area of the 4 inch pipe.
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91_427 Member 427/2000 490/2000

posted 05/09/13 07:49 PM
Quoting blkchr91:
Not good at math, but probably better at most things than you will ever be. Thanks for the help.
Quoting 91_427:
Try using basic math. Compare the area of the 2.5 inch pipe plus the area of the 1.5 inch pipe against the area of the 3 inch pipe. If you don't remember the formula for the area of a circle it is 3.14 times radius squared.
EDIT:SPELLING
Clean the sand out of your vagina dude.
427/2000Designated Donor
490/2000Newest Project Pending EAS
Posts: 101  From: South Jersey  Member Since: 04/02/12  IP: (214.15.218.74) 


