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A while ago I read in a thread about some car manufacturer (Nissan maybe???) that was putting a type of valved muffler system on some of their cars. The idea being at wide open throttle the valve would open letting more exhaust gases to escape. But at normal exceleration, the valve would only open a certain amount giving you better low end torque (more back pressure).
I was looking around the net and came across these. CLICK HERE
I don't know if these are similar. They claim better performance, better gas milage, and lower emissions. I thought I would share this with you all and I would also like to here what you people think.
[ February 02, 2002: Message edited by: Warlord187 ]
I was looking around the net and came across these. CLICK HERE
I don't know if these are similar. They claim better performance, better gas milage, and lower emissions. I thought I would share this with you all and I would also like to here what you people think.
[ February 02, 2002: Message edited by: Warlord187 ]