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997GT3 MC in 996TT - PSM/ABS Issues

jpurban

By jpurban
in 996 TT, 996 TT S, 996 GT2

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jpurban Member

jpurban

Posted
Posted

Anyone have any experience trying to run the 997GT3 MC (99735591030) alongside the stock 996TT PSM/ABS system?

 

Would love to hear from anyone that encountered problems or success...

jpurban Member

jpurban

Posted
  • Author
Posted

FYI... Powdrhound at 6speed replied to my inquiry...

https://rennlist.com/forums/996-turbo-forum/1084729-997gt3-mc-in-996tt-abs-psm-issues.html#post15173164

 

Looks like the 997 GT3 MC is NOT compatible with the 996 PSM/ABS.  At this point, I'm pretty sure that is why my ABS/PSM is throwing the 4600 Pressure sensor error.

 

At some point, I'll go back to the stock MC, which should restore my ABS/PSM, but I'm in no hurry since the 996TT MC doesn't feel great (too spongy) and costs a ridiculous $580 or so.  Frankly, I've driven the car for years without PSM/ABS with no fanfare. 

 

I daily drive my car in all kinds of Midwest conditions (except when salt/sand is down in the winter) and never had a issue.  Even when I (rarely) overcook corners, I get fairly controllable, balanced slides -- no snap oversteer like you'd expect from the old 911s or just about any corvette, old or new.  I don't think I'm a great driver or anything along those lines (I've never been on a track) -- I just think the 996TT has an incredible amount of grip and is very well balanced for a rear engine car.  The factory set-up just built-in a massive amount of understeer, probably for liability reasons.

 

While I'm still AWD, I've taken out a lot of the understeer tendencies with a stiff rear ARB and disconnected front ARB (I'll eventually reconnect it on full soft).  I've also widened the front track (different wheel offsets) and installed wider front tires, while still running 295s in the rear.  I run more front (negative) camber -- about equal to the rear -- to dial out understeer and give reasonable tire life (especially in the rear).  Still, nothing exciting after years of driving without ABS/PSM.  So, I may just continue to live without it...

 

Feel free to reply if you have an opinion to share.  I'd love to hear whether anyone has experience different from mine.    

  • 2 weeks later...
Ronny Pettersen Member

Ronny Pettersen

Posted
Posted

I just swapped for the 997MC myself, but have some issues i have to resolve before i can test it.

Will update with my experience.

 

One question though, do you need a gasket for the BMC? i ordered the TRW one, and not the original porsche.

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