Just got my car from the dealer, where it was for a minor maintnance visit. The car now will not reach the full boost. The boost goes up to 0.3 psi and then drops to 0.1 as the rpm build up. There is no engine light and the car is otherwise normal.

Is there anything I can do, or should I take it back the dealers? I've checked the engine from the top and the turbo hoses looked to be tightly connected to the intake.

I presure there is no harm in driving the car in this state? I can't over-rev the turbo with a leak, can I?

As the car will be going off CPO warranty, is there anything I can specifically request to prevent the reoccurance e.g. updated turbo hose, etc?

UPDATE

 

YES you CAN absolutely overrev the turbos! Look at it this way - the turbos have a target boost that due to a leak or some other issue they cannot achieve. As a result the W/G will not be opened and full exhaust pressure will go through the turbos as it struggles to obtain that pressure level. You can damage the turbos doing this and you will almost certainly overrev them if you see high RPMs with them unable to achieve boost. The dealer broke it, let the dealer figure out what they did IMO... If yuo search for "boost leak test" you ought to be able to find out how to go about testing this yourself...

 

Darn,
I'm glad, I only driven the car for maybe 20 miles.

What would be a symptom of an overspun turbo?

 

kaboom!!

 

Lol yeah that's one potential outcome - the wheel explodes from centrifugal force! Another outcome might be bearing issues that don't show up for awhile. I'm not sure exactly how oil is kept from getting into the intake and exhaust on a turbo but if there are seals these might be also damaged. In general it's something to be avoided IMO. It's not something very likely to happen but why chance it? Try to stay out of WOT boost now that you know something is up and get it fixed and you ought to be fine...

 

good advice, indeed.

I'm not able to see how this issue could be related to an oil change. There's anything they could have done that would cause this leak, right?
So, I'm thinking it is a coincidence and a lucky one since the car is going to be out of the warranty coverage pretty soon.

 

Any chance the techs took it for a "test drive" while it was out of your sight? Maybe popped a hose?

 

It is possible. But how would this be any different from me taking it on a spirited drive? I'm thinking it is just a coincidence.

 

Coincidence is too easy of an excuse I think. Make them check it out. Bottom line is the car should be delivered in the exact condition that you brought it in for, other than the issue/maintenance that they addressed.

Sounds like a boost leak to me.

 

Why would you think that if it just came from the dealer? I would take it back and tell them it isn't right and it was boosting fine when you brought it to them?

 

Yes, I'll be taking it back. Will set up an appointment first thing on the monday morning.

 

Peter,

I'm sorry for your situation. The trouble is that it is all too common with dealerships. Porsche dealerships are as bad or worse than any of them.

If dealerships operated the way they were supposed to, then independent Porsche
shops would have no place in this world. Instead, they are thriving! . . . and for good reason!

I can assure you, tha Akram (@MotorWerks) would never have let ANY car leave his shop in a lesser condition than what it arrived in!

I have been ripped off by the local dealer (momentum porsche) for several hundred dollars worth of damages. Fewer and fewer contractors are willing to do business w/ dealerships because they are so cheap with making customerss happy.

Besides, most indy Porsche shops are approved by aftermarket warranties (EZ Care for example) such as Akram's shop here in Houston.

But you stay on top of those cheap, lazy, shifty-eyed bastards at the dealership, be certain to get your car right!

After that, find a good local guy to take care of you, that way you baby is always in good hands!

 

Truth being told, I looked for the alternative places to take my car after the CPO expires. The only local place that comes recommended is Jone's motowerks. But it is quite a bit farther away from me and doesn't seem to be very professional either. Every time I called them, the lady "who could answer my question" was either out of the shop or busy or etc and never returned my calls.

 

I here ya, Peter!

The problem with many indy shops is the typically low quality of the front desk people.

Of course, that leaves you w a couple of options:

1. Go to the shop n person and ask in person. Once a business has a face associated with a name, you become an actual person to them, and the service improves, dramatically.

2. Contact the PCA, ask their rec's

3. or I could ask Akram's rec, and see what he comes up with!

4. The good members of this forum usually have good advice, too!

 

Peter, Whilst this is something you may be able to solve yourself I would have to agree with the others and would advise you to take the car back to the shop

Once they carried out the service they should have checked the car over to make sure everything else was ok

It seems that the service was carried out and something was disturbed during their work

I would suggest they didn't check the car over afterwards and instead just drove it out of the workshop for you to collect

As the car wouldn't have been under boost they would not have spotted anything wrong

(either that or they popped a boost hose whilst trying to get you a good 60-130 time )

Take the car back to them and ask them to resolve the issue