I got my third 996 Turbo today. It has a Fabspeed exhaust. Lots of repair and maintenance receipts over the past three years came with the car. Boost shows max of 0.1 bar in the cluster. Durametric logs (attached) show 0.6 bar. PSM ABS CEL lights are on. There is an exhaust leak between the right cat and the muffler. I tried another MAF and with the MAF unplugged. All the same results. I don't understand the boost reading delta from the dash to the Durametric. Should the date not some from the same source?

Can a faulty N75 switch cause all this?

I do not hear any boost leaks. When I had a bad DV it was very easy to hear that there was a leak.

Is there a fuse that could have blown?

I'll smoke test the system tomorrow to see if I can find any leaks.

 

That sounds like a nasty one to find - I'm still thinking boost leak though... It would be really hard to find if it is holding 0.1 bar depending on where it's venting.

Something is up with the logs though - I can't see why you would be getting boost at 900 RPM?!? (21:06:54) It makes me wonder if the rest is accurate.

 

I found the boost leak. Car now makes .6 bar and shows it on the display.

The PSM and ABS lights come back right when the car starts. Deleted them three times with Durametric. There is no CEL and no other codes than the P0102.

Car also does not take throttle input very well. There is a lot of hesitation and even backfiring at WOT.

The MAF I put in might be faulty. I'll change back to the old one.

 

Changed the MAF back.

All good now.

 

Excellent!

 

I'm glad your MAF solved it. I have the same symptoms a year ago and a new MAF corrected it.