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K03/K04 wastegate actuators from Forge

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Tfsi_Mike:

Will be keeping an eye on this! Good find!

jonnyc:
I have been watching this over on the other forum on and off..

So are they just saying that the standard actuator is allowing wastegate creep so you loose boost top end?? If so a stronger actuator would for sure be the answer.. It must be pretty easy to test for this??

Im going to look into it and see if I can get something on mine to test, so long as your logging whilst testing then it should be fine!

Jonny

Top Cat:
I asked Bacillus about this a week or 2 back and he said one of his friends is currently testing this, but he has the stage2+ and uprated fuel pump, He doesnt know what if any benefit can be gained by cars not at the stage2+  :smiley:

john_o:
that wasnt my take on the reason.  i took the following :
above x psi  the wastegate is opening to a small or large extent before its even reached a point where the boost should have been bled...
therefore at all points in the rev range whilst under boost there is potential bleed through the wastegate that hasnt been requested by the ECU......
in theory the stronger actuator prevents any bleed , thereby spool is much faster and all flow is controlled by the ECU and N75 rather than constantly having a x psi bleed as part of the equation....

if your car doesnt bleed psi then this mod isnt gonna give you any gain BUT
if it does (and it appears that most K03 cars do!) then it will give you a gain.
It remains to be seen whether VW improved the design for the K04.

remember the way the the OE DV has been changed
1. VW design fails in OE and tuned applications
2. Forge produce a replacement
3. VW eventually come out with a DV that solves the situation that may even be better than the original forge solution to the problem...

please correct me if Im wrong  :happy2:

John

Tfsi_Mike:

Is it here?

http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=&product=FMACVAG05

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