Ok had my Manual 997.1 Turbo for a few months now and for the dam life of me i still cant figure something out that is driving me nuts and killing my driving experience.

Ok so.. Sometimes when im driving the car and feel like driving fast and slam on the gas the car works wonderfully with that turbo speed you expect, sometimes scary, in the PSI gauge, sometimes can get it 15-16 PSI and thats when the car is really flying. Also when i turn sport mode on and i slam to the floor i can see the icon for the PSI booster activate as well.

Now what is pissing me off is that it only functions like i stated before, about 60% of the time.

A LOTTTT of times, when i want to drive fast i do the same exact thing as i mentioned before and i slam the gas down, the car will not spool, i get to like 2-4 PSI and then it feels like its just relying on its HP rather then the turbos so the car isnt going anywhere, also in frustration ill turn on sports mode, and ill floor the gas to activate it, and it WILL not bring up the booster icon on the dash no matter what i do.

when im having this problem, ive tried all gear pulls, 1,2,3,4,5 all different RPM's, styles of punching the gas, nothing the car just doesnt want to spool to high PSI levels or use the boost mode.

And then to make it even stranger, if im having the stated issue above, i get to my destination, turn off the car get out. When it return , turn the car back on and try again it spools perfectly so im just frustrated out of my mind as to why i cant have the car spooling and powerfull on a consistent basis.

 

This is strange. I thought another member had a similar situation and it turned out that there was oil in the intercoolers or something like that and it was causing a intermittent power loss. I'm sure someone will chime in.

On another note, I didn't know there was a light or icon that came on when the car was in overboost mode . . . I need to look into this. LOL.

 

its not going to be consistent, its annoying I know. The overboost function relies on a bunch of parameters, flash it + exhaust and it will do it more often from lower RPMs

 

I'm betting your waste gates are seizing. Same exact thing happened to mine. It's an expensive fix because the turbos need to be replaced. Are you still under warranty?

 

It sounds like it could be an electronic issue as when you turn off/turn on the car the problem goes through. It looks like it resets through the off/on cycle?

 

Boost leak?

 

Do you have an aftermarket exhaust? I saw this thread this morning: https://www.6speedonline.com/forums/...em-solved.html

A long shot, but I figure that you're looking for all the feedback you can get.

 

Check for codes. It may be your vtg actuators seizing up. There was a service announcement on these a couple of years ago. Do a search. You'll probably find something.

 

Im not under warranty unfortunatly, i hope its nothing as severe as having to change the turbos, because i cant do that at the moment

im running bypass pipes so my mufflers are gone. Right now i have Fab Speed High Flow Cats, with bypass pipes. I took off the fab speed muffler.

Any one know of a place in miami that i can take it to to have them check the stuff you guys suggested? It is comforting to knwo about the over boost though that its not consistent.

Could putting my mufflers back on help the issue perhaps?

 

What you're experiencing is pretty common down here....it's just the South Florida heat.

You'll never get totally repeatable performance down in the South Florida heat unless you upgrade intercoolers to be honest. I'm willing to bet that if you were to take a datalog you'd see your intake air temperatures are high when the performance is sacrificed. 100 degrees with 100% humidity will give you just about one solid run before your intercoolers are heat-soaked.

 

From what you're telling, you're going through exactly what I went through. I had bypasses too, and I think it made it easier for water to get to the turbos and settle, corroding the iron and making the gates seize on and off.

Next time it happens, pull over and listen to it idle, if it sounds really throaty, that means the waste gates are stuck open, and that's a pretty sure-fire sign that's what's happening. Sorry, I'm not from the area so I can't recommend any shops.

 

I'm sure this is a problem but not anywhere near the extent you're suggesting. I ran my car 4-5 wrapped-out 20 minute track sessions a day in 100+ Utah summers with 130+ temps off the track with bone stock equipment, and the ECU never sent it limp until well into my 5th session. Even then, 2 cool-down laps was more than enough to get it back into spirit. I'm sure your equipment is killer, but a stock car can go all day before heatsinking causes the ECU to limp mode.

His car is broken.

 

I have a 2009 997.1 turbo. I have been wanting to create a thread about this situation for a while. My situation is not as severe as what you are dealing with. My car is not consistant! Some times i will start it up and throw it in sport mode and it will feel crisp, fast and awesome! Other times it will feel sort of numb, annoying to shift, hesitant to spool. Of course temperatures play a role but i am noticing differences throughout different startups during the day. I cant even enjoy the car when its not on sport mode. It feels way too soft and not special. I feel as if its not big enough of an issue that i would be able to bring it to the dealer. They surely would not be able to find the flaws. I have a 100% bone stock car and I live in New York. Good luck with your car. I hope you can figure it out.

 

Do you think an Intake upgrade would help? also should i consider putting my mufflers back on?

 

Hmm, did I miss anything but were you not getting CEL lights?

I got CEL lights and odd performance - turned out to be the actuators seizing up or something with the screws in them getting stuck... don't remember exactly.

I never drove the car hard at all since the CEL light came on, got it into the dealer right away. They re-lubed the turbos and the car has been fine ever since.