well i got my pacesetter longtubes and y pipe from byunspeed and i put them on today. They are extremely loud with the dynomax bullet and turn down I had my friend do some logging on hp tuners and my injector duty cycle on motor is 100% and on the spray it was 125% bout time for some new injectors before i put the 6.0 i just got in.

 

did you start it up with open headers?
that'll give you a whole new definition of extremely loud

 

That's weird that yuor injector cycle was that high with your mods in your sig before the spray. Mine were at 110 after the cam swap, o well.

 

I woke up my entire household like that Everyone had a hangover as well. My buddy was standing next to my truck when I did it. He said it was so loud it made his chest hurt.

 

yea i drove home with it open cause i broke a bolt on the collector. it was to loud for me i dont know why my inj. duty is so high on motor? clueless my self

 

have you gotten it re-tuned? maybe its trying to run too rich?

 

thats what gets me it isnt runnin rich at all i was loggin with hp tuners.

 

check fuel pressure. i could be falling off at high rpm's.