I bought my 03 X50 from a Porsche dealer. The salesman didn't mention anything about a tune, so I assumed the car was stock. However, I'm regularly seeing 1.1 bar on the boost display at WOT. Is this even possible with a stock tune?

 

For sure not. Stock pressure is for
K16= 0,6 max0,7
K24= 0,8 max 0,9
If you dont like it, go to a porsche dealer and let them install the stock WLS x50 data.

 

yet another mystery tune. what's not to like lol

 

Wait. Did you assume that a Porsche dealer would provide you with any more assurances that a backyard used car lot????

 

X50 should see 0.9-1bar stock.
If you choose to tune back to stock, make sure it hasn't had any fuel system upgrades(FPR or injectors), or boost-enhancing mods(such as wastegates)...
If you aren't mechanically-minded, I would take to a good Indy and have them look around...

 

A X50 with K24s and a stock tune should indicate less boost than 1.1 bar. So, imho yes, you have some sort of tune or an outside chance of an inaccurate boost gauge or sensor. If you're curious you could contact the prior owner and ask them about it.

 

of course its tuned lol. nothing more frustrating than a mildly modded car with unknown provenance. i guess it's time to email all the tuners with your vin! and hope for the best lol

 

This

It took me all of 3 days to find out who tuned my car originally

Also OP join mycarfax.com for free and check the maintenance history, it will show up on that.. my car was done by Porsche Mainline and from that we worked out the tune by emailing them

 

I have an X50 running an EPL tune with 1.1, I would say you probably have a tune.

 

if your looking at the dash boost remember that 1.01 boost will read 1.1

 

that's a good point. i am told i actually have a 1.1.5 tune not a 1.2 ( just to split hairs ) but that sure didn't provide me any solace when i recently saw 1.4 and even 1.5

 

id say u probably have a vacuum leak

 

If your boost goes up and down like this

your N75 is toast. My mech took this video of my car.
I had no leak though.

 

last years issue lol

 

I sent my VIN out to a number of vendors and confirmed the origination of my tune. Woot!