Compression Ignition Addict
Join Date: Jan 2009
Location: In the shaddows of Darkness
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I think I have the same problem.
I have an 01 with a Hypertec tunning system. I have it set on stage 3 all the time. Normaly when its upto temp & you floor it you take off down the road like a wailing banshie. I've never heard a noise like the truley awesome sound from my stacks. It's like a cross between a very loud growl from a very angry dinasour & a jet engine on max.
It only realy makes this sound on stage 3.
Recently if I floor it & watch the rev counter you can see the revs go up towards 3000 then they start to drop back down & the noise is different I think. Then if you let off the throtle a little, the revs pick back up.
I've read a little about this valve thing that needs cleaning in the exhaust. Where is it?
Anybody got any pictures of it.
I think the excess boost get thrown out of the air filter. As I pull up hill my truck has allways hissed the excess boost out & if I have the music down (hardly ever, Im a metal head) People allways ask "what the hell is that"? as it hisses away like a p1ssed off steam train.
01 F350 4x4 Lariat Super Duty LE. Dually. Hypertec system, AFE Induction kit, Rebuilt 4R100 with valve body & TC upgrade, 2x Trans coolers, Stacks & V3. Over the other side of the pond & yes my truck is left hand drive. Not sure why everybody asks me that. Just imported an awesome 06 6.0 Dually long bed. Just got to sort some stuff to make it leagal here...