S55 wastegate calibration

[E92inSG]

How is wastegate calibration performed and can it only be done at the dealer?

[jballer123]

I want to know also

[tom @ eas]

Has to be performed in ISTA or autologic.

[Trevorstein]

Bmp'd.!


How does this work & Why??





Cheers!

[E92inSG]

I’m having problems with high WGDC, surging and boost oscillations with my Pure Stage 2+ turbos. Have reached out to Pure who recommend “actuator calibration” to troubleshoot

[papasmurf_m3]

Have you tried swapping the WG actuators from left bank to right bank or with a different set? It might be something as simple as needing a replacement. Just a thought.

[M4Viper]

I'm having the same issue with my PS2+. Called all over town and no shops provide this ISTA calibration. I've also contacted Pures with no solution.

[E92inSG]

Originally Posted by Megatron23

I'm having the same issue with my PS2+. Called all over town and no shops provide this ISTA calibration. I've also contacted Pures with no solution.

Pure Turbos should have this issue resolve IMO. Shops might not know about this flaw prior to installation nor do they have the ISTA program.

hmmmm

[behindthen0thing]

The dealer can do it.

[mdma-zn]

This is how I understood it:
When you turn your ignition on, your dme cycles the wastegate actuator between fully open and fully closed.
It knows the voltage for both extremes and can adjust the opening/closing of the wastegate accordingly.
I have used ISTA to set the linkage length correctly. Basically ISTA runs a test and tells you to increase or decrease the linkage length accordingly.
If you not out of this specification (drivetrain error), then I'm not sure how this calibration can help?

[gman_newyork]

Originally Posted by tom @ eas

Has to be performed in ISTA or autologic.

Please note that if the waste gate linkage is more than 2mm out of spec ISTA will not read it. Adjust linkage all the way out and then incrementally adjust it inward using the adjustment nuts and keep checking ISTA as you adjust.

This is a common problem if you're not familiar with the limitations of ISTA.

[chetrickerman]

I have done the WG calibration several times using ISTA+

It is not a hard operation to do. But usually if your WG's do require adjustment, your car will immediately throw a drivetrain malfunction. It will throw the error even if you are 1mm outside of the calibration, so it is very sensitive.

Usually low boost with high WGDC is indicative of a boost leak.

[behindthen0thing]

Mine were 2mm out of adjustment and I didn't have a drivetrain error

[M3ZCPNYC]

I just was speaking to pure about this as I have compressor surge with pure stage 2+. I have a JB4 with blue tooth connect and was adjusting my user settings this is where I sit with my wastegate adaptation is at 80 it was originally at 10. I set it and drove the the surge seemed to go away only to come back when I stepped on the gas then backed off the throttle and slowly increased it, but other times when I just floored it (multiple highway pulls) it was fine. Car def feels slower with just a JB4 and not a DME flash stacked.

[E92inSG]

i did get a bunch of these a couple weeks back. Anyway both Pure and my tuner are telling me i need a wastegate calibration most likely. might have been some issue during install.

[E92inSG]

Originally Posted by behindthen0thing

Mine were 2mm out of adjustment and I didn't have a drivetrain error

was there any difference after you adjusted it?

[M3ZCPNYC]

Originally Posted by E92inSG

[img]https://live.staticflickr.com/65535/...4340cd57cf.jpg[/img]

i did get a bunch of these a couple weeks back. Anyway both Pure and my tuner are telling me i need a wastegate calibration most likely. might have been some issue during install.

I throw air mass plausibility codes but not any EWG codes.
I clear the air mass codes and they usually come back every few days or after some spirited driving. I'm not sure what to make of those codes tho.

[behindthen0thing]

Originally Posted by E92inSG

was there any difference after you adjusted it?

I'm my case, no.

[rborane]

Do the pure stage 2 HF suffer from this surging issue or is it mainly the 2+ ?

[MR RIZK]

Originally Posted by gman_newyork

Please note that if the waste gate linkage is more than 2mm out of spec ISTA will not read it. Adjust linkage all the way out and then incrementally adjust it inward using the adjustment nuts and keep checking ISTA as you adjust.

This is a common problem if you're not familiar with the limitations of ISTA.

Do you mean if more than ~2mm that ISTA won't report an issue but at ~1.5mm it will say there is a calibration issue hence why you suggest the incremental adjustment till you get it within spec.

[gman_newyork]

Originally Posted by MR RIZK

Do you mean if more than ~2mm that ISTA won't report an issue but at ~1.5mm it will say there is a calibration issue hence why you suggest the incremental adjustment till you get it within spec.

Originally Posted by MR RIZK

Do you mean if more than ~2mm that ISTA won't report an issue but at ~1.5mm it will say there is a calibration issue hence why you suggest the incremental adjustment till you get it within spec.

Exactly. Anything more than ~2.0mm and ISTA will give you a random mechanical or electrical error for the waste gate. Once you get it within range ISTA with give you an actual adjustment in mm.

[Daggers]

Where is the calibration done within ISTA please?
I've found where to measure what it currently is (IE, value for closed limit position in mm etc) but not any 'calibration' of sorts.

Thanks!