VGT off?

[TD-5]

heres the vane position % tables for comparision

 

[3brorce]

Anyone have a video of vanes open at idle and close above 1k? I would like to hear it.

 

[Will@Rudy'sDiesel]

I have my vanes closed at idle. And they open at 1k. When you let off the fuel it sounds like a 6.7.

 

[RedRice589]

I have my vanes closed at idle. And they open at 1k. When you let off the fuel it sounds like a 6.7.

Wish I would have done that sounds wicked!!

 

[3brorce]

I have my vanes closed at idle. And they open at 1k. When you let off the fuel it sounds like a 6.7.

Lets hear it!

 

[Will@Rudy'sDiesel]

Ill get one taken here in a little bit.

 

[Pizza pig]

I have my vanes closed at idle. And they open at 1k. When you let off the fuel it sounds like a 6.7.

if it rumbles it means the vanes are open at idle

 

[jordan572]

I want the video!

 

[MrMike2010]

Unplug the vgt solenoid and start your truck. Unplugged will open the vanes all the way up and you can hear it at idle. Wouldn't advise driving around tho it will be super laggy.

 

[TD-5]

Played around with the turbo settings again today. Reduced Vane position % tables & desired back pressure tables by 10% across all the tables. Set everthing below 1000 rpm to 0.0. Seat of the pants says I don't see any negative or positive changes in performance. still puffs a little more( I think) black at the lower/ off idle rpms , but then the H&S tunes always seem to smoke more after a change? Will have to run it like this for a while to see if there are any positive gains in economy.
Exhaust tone at idle sounds good, most of the Hair dryer effect is gone below 1000 rpm.

http://www.youtube.com/watch?v=zoBp56W8PZI&feature=youtu.be

 

[jordan572]

Nice, does it sound like a 6.7 when you get out of it like will said? Are you slamming the vanes shut right above 1000 rpm then or do you ramp them up slowly. I would think it would lag bad to 1000 then it would shut the vanes and surge almost cause the boost would come on so quick.

 

[3brorce]

That sounds like a diesel!

 

[drunk on diesel]

Nice, does it sound like a 6.7 when you get out of it like will said? Are you slamming the vanes shut right above 1000 rpm then or do you ramp them up slowly. I would think it would lag bad to 1000 then it would shut the vanes and surge almost cause the boost would come on so quick.

you can go from 0 to 95% and it won't hurt anything... not sure what converter you're running, but my truck has no "lag" up to 1000 because if you breathe on the pedal, it jumps well over 1000rpm.

there's a little more tip-in smoke with this setup, but the sound is cute

 

[TD-5]

Never noticed any lag or surge, Truck performed about the same as it did before the changes, there is a more noticeable turbo spool down whine when the revs drop to idle, & the slight difference in smoke, but then I dropped all the tables by 10% so that may have some effect on the smoke. Will need some more seat time @ different loads before making any conclusions

 

[Stroked777]

It probably puffs a little more at idle because the turbos aren't "pre spooled" like Matt told me in an email last week when I asked him about this, he said throttle response from a light would be a little slower

 

[3brorce]

I believe that. I wonder if would be noticeable difference. Almost makes the truck sound like a single event truck.

 

[drunk on diesel]

the difference in off-idle response is pretty much imperceptible... only difference is maybe a little extra puff of smoke.

Watch your tach and see how long your truck spends below 1000rpm when leaving a dead stop. It ain't long, and it occurs well before the truck really moves.

I ran my truck like this constantly until I got Matt's tunes. I talked with him about doing this, but his tunes run so well and at the end of the day that's all that really matters, so I never pursued it furthur

 

[Stroked777]

Anyone discover a way to make the vanes actuate like the 6.0 stratagy to make them open and close? I loved that on my 6.0 when I had it

 

[jordan572]

Are you guys only changing the number 1 VGT table?

 

[drunk on diesel]

I changed all VGT tables and all desired backpressure tables. I would set the VGT duty to 3-5 or so, not 0. When I was setting up my VNT controller for my Dodge, Brayden said the solenoids don't like to be pegged out. Not sure if the same applies to the 6.4 high pressure controller. Probably not, but I still set it up like that anyhow. Same goes for full closed. Note that factory tuning has it at 95%, not 100