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intake and exhaust do little to nothing.
and the factory exhaust option is merely a muffler..its' not even larger piping or anything like that. expect to have like 109hp :p
only difference u will notice is louder engine, freer reving but power will remain the same.
power shouldnt be a concern if u are purchasing an echo. it's a 1.5l econobox. it's for good gas mileage and practicality, nothing more.
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The boro guru
geocities.com/nuahs_cx my site about ae92, ef and track info
boro song
"boro boro boro
here we have a duct tape la la la
here we have an electrical tape du du du
here we have a coke can da da da
and then we have a downpipe!! boro boro boro"
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