[shanemcse]

What do you guys think about the DynaTech Vortex Insert Cone to reduce sound in the muffler? Has anybody used it before? Is there much of a HP/TQ decrease.

This is what I am talking about.
http://www.secureperformanceorder.com/dynatechstore/vortex.cfm

 

[shanemcse]

Has anybody use this cone that you install into the muffler?

 

[415_300C]

i'd like proof that it doesn't decrease HP, i've put a silencer in my STis exhaust and there was a VERY noticealbe difference in power... who knows, may be this one is designed differnently.

 

[Dixietwister]

The header collector would have to be designed to use them from the start. Have some to go into a harley Meg exhaust. but I needed the backpressure. They would only hurt the HEMI unless you were running open exhaust.

 

[415_300C]

good point dixie, my exhaust is full and completely open (not the c), hence the severe loss of power...