Pewter53

iTrader: (36)

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.

00ChevyScott

iTrader: (10)

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

oneslammedgmc

iTrader: (1)

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.

01Blue4.8

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.

Pewter53

iTrader: (36)

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

00ChevyScott

iTrader: (10)

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

Pewter53

iTrader: (36)

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

Truckshop

iTrader: (17)

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