ANYONE INSTALL AN X PIPE ON THERE 99 L,IM GETTING READY TO AND WAS WONDERING HOW MUCH MORE POWER I WOULD GET OUT OF IT AND HOW IT WOULD SOUND? THANKS

 

 

I HAVE 2 FLOWMASTERS ON IT NOW,DO I REMOVE THEM AND INSTALL THE X PIPE IN ITS PLACE? HELP!!

 

you will most likely have to remove them. you might just want to get it done by an exhaust shop

 

Xpipes are intedned to work in exhaust systems between two equal lengths of ehasut pipe. Examples are Mustangs and Corvettes which both have equal length exhaust runs with factory H pipe's. So the exhaust timing of each bank helps pull the other side's gasses along. Look at the L's exhaust, the passenger run is straight back about 3' and the drivers comes back then around and over about 6'+ total. It is easy to see the exhaust timing is too far apart for an X to work. It does smooth the exaust tone a bit by mixing both sides into one. Anyone with dyno'ed gains post them up.

 

Anyone got a part number for the X-pipe used in the JDM setup?

 

For some reason that makes complete sense to me.

 

then why does everyone want to put an X inline with the new exhausts that go with the L?

 

maybe thats what they corrected with that new magnaflow cat back?

 

They sell them because people will pay for them. It is a buzz word to the performance community. the Magnaflow muffler is a dual in/out design with an open chamber in the middle. So Magnaflow coined the term built in Xpipe so the performance community would pay more and buy more. It is all marketing. My customers running straight or non X systems are dynoing and racing just as fast You buy a muffler or cat back for 75% sound, 25% looks, performance gains are nill unless you have headers, big pulley and more flow ahead.