turbo flutter

[RPolidora]

Ok, a few weeks ago I installed the complete monster exhaust that replaces the cast elbow downpipe and all. I now have this "flutter/sputtering" noise while accelerating fairly hard. Not always but seems to always be there if I start to get over say 15-18lbs of boost. I can actually see the boost gage fluctuate some very quickly while the noise is present.



I am hoping this is normal and that I can now hear it because the heavy cast elbow is gone and the exhaust is free flowing.

Is this correct or do I need to get it looked at. Truck runs great, just a wierd noise.



thanks

 

[moolie]

i got the same thing too with the killer b turbo and it didn't always do it. It just used to whine and whistle very nicely. Eventually though it started becoming more and more frequent. I don't think one can ever get totally away from it. I have learned to drive around mine pretty good for the most part. I was debating on getting one of those tag devices to see if that helped. I have been wondering the same thing you are wondering for a while now. Does it do it when your transmission shifts to od sometimes also? Sometimes mine does it really bad i let off because that's the natural reaction and that only makes it worse. If u keep going through it with pedal it doesn't seem to bother it. I heard a certain noise and i emailed paul at htt because in this video of the banks truck i heard it also http://www.atsdiesel.com/Video/TruckFest03/SidewinderStage_A9_20030729_1.MOV





listen to it at the end of it and tell me if you ever get that noise. I have it excessively at times. I had lazr bob redo my tank's flow to the fass pump and it's a lot more less common i can say that. Do you ever get that noise there when u get your fluttering?

 

[EMD-Run8]

Mine has it too. It's nuthin-------------mash it!!!!!!!!!!

 

[RPolidora]

anyone else experience this noise? those with exhausts that replace the cast elbow? I am sure the noise was there to begin with, just couldn't hear it as well.



thanks guys

 

[moolie]

I had it really bad but then i took and had the fass pump quick connect bipassed. I had lazr bob plumb a new fitting in the tank and man it's amazing the pump is quiet and not only that I lost over 90% of that fluttering sound

 

[JThiessen]

I dont have it. Have you double checked all of your exhaust connections to make sure you dont have a leak?

 

[Buffalo]

Is that the same "fluttering" that some of the Ford Powerstrokes have? Joe F. (Buffalo)

 

[RPolidora]

You know, I have no idea. I am going to have a couple local diesel guys listen this weekend if I can get ahold of them. Thay are really into these trucks and they post on here quite a bit. I have already had a few other folks listen and all have a different opinion of what is causing it.



Before I replaced the cast elbow, I could actually here a little valve clatter noise right before it shifted and I am really thinking this sound is a direct result of that. I almost sounds as though it is exhaust pulses hitting inside the banks downpipe since it is stainless steel and not that heavy cast elbow. I also notice the boost gauge fluctuates just a little right inline with the noise while it is there. The truck runs great and its probably nothing.



Thanks guys.

 

[KYLE4]

Look into the turbo airguide it does quiet down turbo whine and improve turbo efficiency talk to Dave Meheen of Meheen manufacturing he's a good friend of mine 866 379 8685 tell him Kyle Graham of extreme diesel performance sent you.