Full Version: 2009 YFZR 450 exhaust
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This system makes 1.5 HP more that the lod 04-08 YFZ exhaust. The dyno sheet is with a RE pipe, no air box lid, free air kit, and PC5. This is a big core 14" can 105 Dbs. The closed end cap with discs works nicly to tone the noise down without killing the power.
QUOTE(JOE@Rossier @ Apr 8 2009, 10:15 AM) 
This system makes 1.5 HP more that the lod 04-08 YFZ exhaust. The dyno sheet is with a RE pipe, no air box lid, free air kit, and PC5. This is a big core 14" can 105 Dbs. The closed end cap with discs works nicly to tone the noise down without killing the power.
QUOTE(JOE@Rossier @ Apr 8 2009, 10:20 AM)
QUOTE(JOE@Rossier @ Apr 8 2009, 10:15 AM)
This system makes 1.5 HP more that the lod 04-08 YFZ exhaust. The dyno sheet is with a RE pipe, no air box lid, free air kit, and PC5. This is a big core 14" can 105 Dbs. The closed end cap with discs works nicly to tone the noise down without killing the power.
Nice numbers, do you have a dyno sheet w/ the closed end cap and db's?
QUOTE(want2bfast @ Apr 8 2009, 10:34 AM)
Nice numbers, do you have a dyno sheet w/ the closed end cap and db's?
With 12 discs and a closed end cap it old lost .5 HP and was around 99-100 dbs. This system will end up replacing the old YFZ pipe and be called the Spec 2
Very Nice, For a Damn yamaha..
Very nice Joe...Once again you have done the impossible....Getting that much horse out of a yammy with just that little of mods....
wow really nice
Good job! The pipe cleans it up alot also..
Nice nunbers,the pipe looks sweet . What kind of TQ numbers did the yamaho put down? 
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