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Installed a 997 GT3 Master Cylinder in my 996 C2

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Installed a 997 GT3 Master Cylinder in my 996 C2

 
Old 02-14-2019, 07:09 AM
  #76  
Priitpo
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Originally Posted by JJ_W View Post
Unlikely it will work without any codes.
As previous posts have stated, you will get ABS and PSM codes and error lights on your dash and both will be non-functional. These errors will come up as soon as you hit 50km/h (30mph), at which speed the ECU checks the pump for correct pressure. The PMN166 does not have the correct fluid routing for the PSM system, so the fluid pressure will not be correct, thus tripping the codes.
If you unplug your PSM power plug, you will not get the ABS light on your dash, and ABS will function. The PSM light and error will remain. You might also feel your brakes to drag while driving, which is very dangerous.
I have a 2002 C4 with PSM, and the PMN166/997GT3 brake master cylinder is not compatible with it. A friend of mine installed one in his C2 with PSM, it didn't work either.
Thanks, will give it a go anyways, as I got the MC and 12->10 adapters -> will send update as soon as possible. PS I got my MC from local parts store for roughly half the price (~130€) I've seen online and from web shops.
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Old 02-16-2019, 09:31 AM
  #77  
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Originally Posted by Priitpo View Post
Thanks, will give it a go anyways, as I got the MC and 12->10 adapters -> will send update as soon as possible. PS I got my MC from local parts store for roughly half the price (~130€) I've seen online and from web shops.
...sadly PSM error appeared. Right after the install and bleeding. Looking at the MC’s there are some differences there the sealing part to the booster and lenght of the connecting rod to the pedal...




there is a 2-3mm difference there. Could that have some meaning in triggering the error. Anybody interested in the GT3 cylinder? Original going back to the car
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Old 02-16-2019, 10:12 AM
  #78  
Nickshu
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So strange that so many of you have had problems with PSM errors. As said in my previous posts I installed this M/C in my 2003 C2 with PSM and had no issues. Drove it for a year with it, no problems. Drove several track days on Hoosier R7's, no issues. Mine would have been an from older LOT of TRW M/Cs. Wonder if something was changed internally on them? Seems doubtful.

I no longer own my 2003 C2. I moved the 997 GT3 M/C over to my current 6-GT3 before selling the C2. My 6-GT3 does not have PSM however.
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