It's a 997.1 with 3 pedals. I took it out last night, put it in sport mode, got on a slight incline, and ran in from the bottom of 3rd to the top of 4th. It was about 50 degrees out. It wouldn't go past 15 psi, not even a spike. Car has 38K and I run 91 octane, although I've hit 18 on 91 regularly in the past (pending cooler conditions). Any thoughts?

Thanks.

 

Might not be anything. Any pending codes when you scan it?

 

Was it up to operating temp?

 

when was last u cleaned your air filter?
also check the selenoid ..

 

It was well into operating temps. I don't have any equipment but it's scheduled to be looked at. All services is up to date except the 36K mile one. Did the filter a few months ago...

 

another questions since I'm taking her in next week:

The sun roof takes several attempts to get it closed. They've looked at it before and returned it claiming it fixed, only to do it again. The tech told me he cleaned the rails. What is the problem?