Here is what is happening for my truck. Any power level above ZERO and any tune including DEFAULT tune will do this. ZERO level is clean and smooth no issues. Reflashed my Quadzilla with the current tune and even dumped my iQuad App and reinstalled.

 

 

Edited August 1, 20177 yr by Mopar1973Man

10 hours ago, kzimmer said:

Woops... New boost Defuel setpoint.

1

 

Good use for the boost limit... 

As I drive a stick, that is something that I never thought of. I hope that works out well for you.

 

On 10/7/2017 at 12:30 AM, kzimmer said:

The funny (or not so funny) thing is, that's how I knew for sure that I slipped my converter today. I was passing a car on the highway, matted it, and when it shifted into OD I dropped from 50psi to 40psi, and I felt the clutch grab with the drop in power. Woops... New boost Defuel setpoint.

Better then what I did 2 weeks ago just put on my new turbo and let it run for a few days got on it once striped the input shaft on the drum side..... 

Eww. Hopefully your converter survived it. I think I might start collecting parts for a manual swap as I find good deals. Something I should have done a long time ago. When this 47re comes out for a 4th time, it's staying out.

Striped the splines converters fine had it repaired in under 12 hours 

@Me78569 was using your daily tune and put it on level 5 for a stretch to see the tune and my truck stalled out is there a way to export the log to see what happened?

The app doesn't care as long as you don't exit the app.

 

Export the log

7 minutes ago, Me78569 said:

The app doesn't care as long as you don't exit the app.

 

Export the log

App just froze as I was exporting. I think I just lost my log?

E sure you give it time to export the app may appear to freeze but if I just let it sit and tell Android to wait it always exports.

13 hours ago, JDHudsn said:

@Me78569 was using your daily tune and put it on level 5 for a stretch to see the tune and my truck stalled out is there a way to export the log to see what happened?

I've been using his daily tune also 

So what’s the consensus here? I don’t have time to read thru 9 pages. Anyone got the quick answer why it’s shuddering? ****, I thought my torque converter was bad until I seen this thread. 

When's the last time you updated?  The shudder should be gone in low rpm situations

@Me78569 what’s the possibility my truck air locked?

anywhere between %100 possible and %0 possible lol.   Some trucks seem to be prone to airlock.  My truck has never once done that.   

 

Are you able to repeat the issue?  

3 hours ago, Me78569 said:

anywhere between %100 possible and %0 possible lol.   Some trucks seem to be prone to airlock.  My truck has never once done that.   

 

Are you able to repeat the issue?  

Figured as much haha. I have not been able to repeat the issue as of yet. 

meh if it doesn't repeat dont worry.  

I had a one-time stall out. Wouldn't start. Couple codes. Towed home. I thought I cooked the vp until I decided to crack some lines. Fired right up and hasn't missed a beat since. It was one of those cases where I was beating on it and let off the throttle very quickly.@Mopar1973Man gave a good educated guess around here somewhere just recently about what is happening in that particular scenario. Makes a lot of sense.

 

On 10/17/2017 at 5:53 PM, kzimmer said:

.@Mopar1973Man gave a good educated guess around here somewhere just recently about what is happening in that particular scenario. Makes a lot of sense.

1

 

When you figure out boost pressure and compression ratio (16.3:1 or 17.0:1) you find that the calculated cylinder pressures are way up there. Like the last I remember on the math at 30 PSI of boost with no fuel the cylinder pressures are roughly 1,100 PSI. So when your getting upwards in boost pressure and dumping lots of fuel the pressures get even higher. The thing is the injection pressure always is high than cylinder pressures so fuel continues to spray because of heavy throttle. Now jump off the throttle instantly that pressure will most likely over come the pintle and push compression gasses back into the fuel rails air locking the injection pump. This why most performance guys have to tap the throttle several times as the RPM's falls to keep fuel spraying and keep pushing the compression gases back out of the lines.

On 10/6/2017 at 11:00 PM, Me78569 said:

Kzimmer found a bug that kept load from showing on the screen.  I forgot to comment out a testing thing I do.  No impact other than not seeing load on the screen. 

 

Here's the fix. 
V2Idlesmooth.exe

 

It also has a new thing in the defuel to try and increase fueling if boost drops too much below the defuel set psi.   This was only an issue if you were shifting into OD while boost was at or near the limit.  It would self resolve, but it took a good 5 seconds.

I have never had a problem with any of the others, but this one my computer is telling me it's a virus and even when I bypass the safeties to get it to download I can't get the computer to let me open it and load to my quad. Same computer and settings I have always used

Got to be a fail alarm...

 

The entire server here is protected by ClamAV software. All files are scanned and checked on both Mopar1973Man.com and PrevailWebManagement.Com

 

https://www.clamav.net/