please help me understand what the crap is going on? (wastegates) : Resolved!!!

[TopherSho]

It might be #%%ing fixed. 

i have been beating on it at lunch,  not logging possible. and it seems ok now.  walked away from some kids in a shiny 5.0 on a onramp stop light who looked very confused when they caught up at the freeway interchange 30 seconds later.  Left a very angry older Porche 930 driver behind on the same on ramp on the way back.  then lost only by a little bit to a angry sounding Caddi-Vsport something or other. (looked like an aplha platfrom)

there is still some kind of fluttering,  but it might be placebo or turbulence since i am running without the bottom splash guard.

when i have time to do real testing i will know more.

so it seems two fold. (1) overboosting is now fixed,  (2) updating the tuner stopped the bad fluttering and stalling. 

or .. fixing the tuner fixed the over boosting?  I dunno.. i had a cracked bad turbine and control arm.. so in the end i'm just going to validate my findings and just go with it.  If i fixed this with the tuner earlier i'd likely blown the engine with the bad turbo on race day at PIR so .. its a wash.

i need a drink.

 

[SHOdded]

You may be at a Hallelujah crossroads lol.  Make sure it is not singleparenting day when you imbibe tho!

 

[TopherSho]

You may be at a Hallelujah crossroads lol.  Make sure it is not singleparenting day when you imbibe tho!

I am still befuddled.  And angry now actually. 

how the freak did a tune ''go bad'' ? 

it is the same tune,  on the same handheld applied to the same car that did not change in any way.

NOTHING changed t any of those three things.

corruption might explain 1 tune on the SCt handheld but all f**king 5 tunes!!??  2 meth tunes and 3 non meth tunes????

if my turbo turbine had not been cracked and the control arm practically falling off .. that 2800$ would have damn made me set some fire.. edit : (redacted some angry posting)

if this is a ''thing'' i may have some stern words for SCT...

 

[SHOdded]

I dont think it is a question of corruption.  I think a change in parameters and tune handling is what goes on with device updates.  They must be correcting and improving software performance with the updates, and the tune has to be in sync with the current firmware/software.  This is very common on software platforms.  I have seen this in my custom programming when the platform comes out with updates, suddenly my program starts behaving erratically, UNTIL I read the documentation and update my custom program to comply with the platform's current environment.

 

[StealBlueSHO]

$2800 in the long run isn’t enough money to get that upset about.

As far as the tunes going corrupt, I doubt it. If your telling me that all the tunes ran great one day and bad the next without any changes then perhaps its environmental? These ECUs are extremely complex in how they handle different environmental values. Hell there is one in there to adjust the cars boost based on elevation.... let alone temps, loads, etc...

Maybe the tune ran well during the summer months because the IATs were warmer? And in the winter months with the colder IATs your pushing more spark sooner(or later) in the RPM band?

Grasping here lol... but all those variables do make a difference.


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[ajpturbo]

Im not an IT or programming guy by any means but in order to eliminate possible causes it’s standard operating procedure for tech support to make sure the customers device and tune version is using up to date software...you chose not to do that

I suppose it’s possible that I had made a tune on newer soft/firm ware than your device was set up for

Add to that that I still think something was wrong with the wastegate actuator

Regardless, this is ending up good right? Im looking to see when you post logs so I can check them out

 

[ajpturbo]

Temp changes would not make boost change that much....Topher’s was massively overboosting in the top end where boost normally tapers...ive never seem that

That’s the great thing about closed loop boost control...to a point the boost will be taken care of as long as the target boost was where you want it and his was

 

[StealBlueSHO]

Another option here is to offload the SHO and get an STI... I heard those will gap an SHO all day long... ;-)

Temp changes would not make boost change that much....Topher’s was massively overboosting in the top end where boost normally tapers...ive never seem that

That’s the great thing about closed loop boost control...to a point the boost will be taken care of as long as the target boost was where you want it and his was

I was referring to the stuttering issue he is having that I also experience. Unfortunately I have tried to datalog the issue but nothing shows in the datalog..even when it happens during a logging session.  Overboosting is a different issue all together...

 

[TopherSho]

I dont think it is a question of corruption.  I think a change in parameters and tune handling is what goes on with device updates.  They must be correcting and improving software performance with the updates, and the tune has to be in sync with the current firmware/software.  This is very common on software platforms.  I have seen this in my custom programming when the platform comes out with updates, suddenly my program starts behaving erratically, UNTIL I read the documentation and update my custom program to comply with the platform's current environment.

I might agree with this if the issue fixed itself in 2 months when it warms up.  But fixed itself IMMEDIATELY after resting the handheld.

It is just way to coincidental. 

My tin hat is on tight for this one.  After the reset every tune worked. Before even stock stuttered which prompted the parts parade.

I’m glad it works I know what fixed it but my tech nature doesn’t know the root cause an it BUGS me

 

[TopherSho]

Another option here is to offload the SHO and get an STI... I heard those will gap an SHO all day long... ;-)

Really now !?  Now your just trying to take me out of my perfectly bad mood with that comedy   I can’t count the number of suburbs that I have left behind at PIR.  (I don’t race with Turns )

 

[StealBlueSHO]

Another option here is to offload the SHO and get an STI... I heard those will gap an SHO all day long... ;-)

[quote/]

Really now !?  Now your just trying to take me out of my perfectly bad mode with that comedy   I can’t count the number of suburbs that I have left behind at PIR.  (I don’t race with Trina )

Gotta inject humor sometimes buddy...


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[FoMoCoSHO]

Another option here is to offload the SHO and get an STI... I heard those will gap an SHO all day long... ;-)

What are you drinking?

Must be some good sheeeat!

 

[TopherSho]

Ok driving in a second.. post later

 

[StealBlueSHO]

All day long...


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[TopherSho]

All day long...


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Full of Vodka right ?  :drunk:

 

[ZSHO]

Cheer's to that!  Z

 

[TopherSho]

Its busted again,  Same behavior.  super bad stuttering under prolonged boost in 2nd and 3rd past 4000 rpm.

it was doing perfect,  multiple starts and stops,  hard driving then normal driving.  but on the way home from Coburg Pizza,  it hiccuped 1x in 2nd.  that made me suspicious so i dropped the mini-me off and went out and gave it a hard push from a stop and sure enough 2nd was a mess past 5000 rpm,  and keeping my foot in third made it start having a seizure after 4000 rpm in third.

No logs,  will try tomorrow. 

there has been no handheld hooked up since the ''fix'' of resetting the SCT. so the only thing that has changed is 'time' on the car.

if this is a bad ecu that losing cell data,  i may have  conniption fit.  i am going to pull all the tunes off the handheld,  then put the good ones back.  and re-flash the car to oem, then back to the good 15 pound tune. 

sigh

 

[ajpturbo]

What tune revision were you on when it behaved bad?

 

[TopherSho]

What tune revision were you on when it behaved bad?

This one (attached).  It ran for about 36 hours without issue on this tune.  then tonight it regressed.  I want to data log it with both the old config log,  and the new datalog. 

 

[TopherSho]

F$%k it.. I'm going to get a partial log right now,  it's easy to reproduce at mostly legal speeds for 2nd gear.   

3rd would be better and it would be in range of the issue longer but its to dark. well do that tomorrow.