Rear Y Pipe / mufflers
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Measure the minimum pipe opening inside a stock pipe and then inside a 3" mandrel bent pipt. You'll find about 1/2 the area or less. This is a flow restriction.
The most restrictive part of the exhaust system will be the limiting factor in flow. Free flowing mufflers may help a little but it realy takes front Y-pipe, cats and cat-back attention to uncork the HP Genie. Of course full-lenght headers finish off the treatment.
Check out my site for HP gains from some exhaust changes.
The most restrictive part of the exhaust system will be the limiting factor in flow. Free flowing mufflers may help a little but it realy takes front Y-pipe, cats and cat-back attention to uncork the HP Genie. Of course full-lenght headers finish off the treatment.
Check out my site for HP gains from some exhaust changes.
