Exhaust modifications

[lakestreetboys@gmail.com]

Is there a big difference between the C4 manifold and long tube headers with the exhaust system closed

 

[LLC5]

Is there a big difference between the C4 manifold and long tube headers with the exhaust system closed

What do mean by exhaust system closed?

 

[lakestreetboys@gmail.com]

What do mean by exhaust system closed?

Without opening the headers

 

[LLC5]

Without opening the headers

There might be a little to be gained, but it really matters what you have in front of the headers (intake,cam,and heads) and in back of the headers (cats and mufflers). OEM stock, probably mot much gain.

 

[Rob]

Moving to the C4 Tech forum...