Massive Turbo Bark!!!!

FMOS

FMOS

Hard Up
Nov 19, 2008
352
0
0
Fort McMurray, Alberta, Canada
Got my truck up and running with the net HTT turbo. Runs not bad. Still running my old tune before I did the headgaskets and swapped out the stock turbo. But I've got some massive turbo bark going on. I can't even really rod on it at all because when I go to let out of it it barks so easily.

Is this something I can tune out?

Is the blow of valve an option that would work well?

What can I do about this?
I will be working on my tuning in the coming weeks to try and get it running nicer, spooling a bit quicker and it would be nice to get rid of the bark. Let me know of any suggestions.

Right now, the waste gate is set to make about 30-35 psi boost and according to my gauge that only goes to 30psi I am making it no problem. According to my log, it looks like the wastegate is functioning properly because between a half throttle run and a full throttle run I almost made the same amount of boost. Kinda caps off just about 300kPa... and I think that is absolute pressure, so minus 14 psi off whatever the conversion was.
 
TrentNell

TrentNell

Finally underway !!!!!
Jul 7, 2008
7,543
0
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44
slc tuah
FMOS said:
Got my truck up and running with the net HTT turbo. Runs not bad. Still running my old tune before I did the headgaskets and swapped out the stock turbo. But I've got some massive turbo bark going on. I can't even really rod on it at all because when I go to let out of it it barks so easily.

Is this something I can tune out?

Is the blow of valve an option that would work well?

What can I do about this?
I will be working on my tuning in the coming weeks to try and get it running nicer, spooling a bit quicker and it would be nice to get rid of the bark. Let me know of any suggestions.

Right now, the waste gate is set to make about 30-35 psi boost and according to my gauge that only goes to 30psi I am making it no problem. According to my log, it looks like the wastegate is functioning properly because between a half throttle run and a full throttle run I almost made the same amount of boost. Kinda caps off just about 300kPa... and I think that is absolute pressure, so minus 14 psi off whatever the conversion was.
Click to expand...
mine was never bad about barking but for starters i would set the gate higher ... more like 42 psi . but if you are wide open and chop the throttle yes it will bark . i would have to have more info on the barking .
 
FMOS

FMOS

Hard Up
Nov 19, 2008
352
0
0
Fort McMurray, Alberta, Canada
Hmm...

Well I dunno what else I can say. Compared to the stock turbo it actually does it easier. Anywhere upwards of 1/2 throttle if I let off quick it will bark. I can kind of control it if when I rod on it I let out of it slowly. But even then, it still barks fairly easy.

I'm worried about trashing this turbo like I did the stocker haha. Will the blow off valve eliminate the bark? 600 bucks... but if it saves my turbo then I'll buy it.

And ya, I was hoping to run about 35psi or so. But I need to make a whole new tune for this thing, I'll get it dialed in slowly. Just need to take a solid day or two and play with the truck. I'm going to start completely from scratch on a new tune.
 
duramax215

duramax215

Team Jacoby
Dec 17, 2008
456
0
0
36
Waubeka, Wi
the only good way to do it mechanically is running it somewhere off your 4 wheels drive where theres vacuum or something in that area. i read that a while back i forget where!
 
TrentNell

TrentNell

Finally underway !!!!!
Jul 7, 2008
7,543
0
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44
slc tuah
duramax215 said:
the only good way to do it mechanically is running it somewhere off your 4 wheels drive where theres vacuum or something in that area. i read that a while back i forget where!
Click to expand...

you can use drive pressure ... superdiesel just posted about it anyone interested pm him for details .
 
FMOS

FMOS

Hard Up
Nov 19, 2008
352
0
0
Fort McMurray, Alberta, Canada
From what I was reading the mechanical setup hasn't really been working all that good for guys. I'll read some more, I haven't followed up in a month or so.

And I know its not a ricer. But if you floor the truck in town and get it up to speed and then want to let off.... to prevent barking I'll have to take about 3 full mississippi's to slowly let out of the throttle haha. I know what your saying about getting a feel for it though, I'm getting a bit better.
 
MAXLLY

MAXLLY

No Lemming Here
Aug 15, 2007
1,063
0
0
San Diego
http://autospeed.com/cms/A_2188/article.html

That link is a start for a guy who wants to do it himself.

When we leaned the truck out it didn't bark so bad... but it ran like poo.

Cheapest option? install a solenoid on a switch offering a boost leak on the street, unless its a huge charger it won't bark with a boost leak.

JEGS had the Dodge BOV on sale for $400. TPS signal is the same no? I'm gonna find out...
 
S

S Phinney

Active member
Aug 15, 2008
4,011
18
28
Quncy, Fl
You need to check drive pressure. The numbers will probably be on the high side. You can use a blow off valve to eliminate the bark. Any tuning that makes it more responsive will increase the bark.
 
sweetdiesel

sweetdiesel

That's better
Aug 6, 2006
10,390
0
0
51
Thailand
Tuning can help TBIQ,PW and Timing you need to log the bark it is probably lots of fuel:)

my HTT drive pressure would rarely ever go over 1:1 even with the twin cp3s

A BOV would be nice to have though
 
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paint94979

paint94979

Beer Nazi
Sep 18, 2006
11,714
7
38
37
you will need to learn how to drive the HTT turbo, you need to slowly decrease pressure to the pedal, with my VVT I would spool it hard then let off it NEVER barked just WHISTLED I wouldn't worry about it barking unless it barks on shifts or light driving.
 
whitetrash21

whitetrash21

put on da damn helmet day
Apr 29, 2008
4,929
0
36
Vegas
motohed said:
ive never looked into this till i toasted my motor, but what is the "type" of noise a bark is? harsh and quick, or a "whoosh"???:confused:
Click to expand...

barking is the coughing sound the turbo makes when you cut throttle really fast. the sound you hear at 0:24-0:25

[YOUTUBE]tz60ZDSZPh8[/YOUTUBE]
 
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