Muffler replacement huge horsepower gains!

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#19 (permalink)

04-14-2009, 08:01 PM

priobe

CC Member

Join Date: Mar 2004

Location: miami, FL

Cobra Make, Engine: E-M Cobra Ford FE 427 w/ Webers 48 IDA

Posts: 1,383

Not Ranked

I am currently getting ready to make my mufflers. I dont not want to get the same "flutter sound that everyone is speaking of.

Here is my setup.

My collector is 3.5 and my muffler are 3 in with a 4 inch body. I had a muffler shop expand the 3 inch to 3.5 I.D. I will then cut down the expanded 3.5 ID where the cone shape enters the muffler.

Will I experience this flutter noise?

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