possibly boost leak.....

[Silver Ecstasy]

Hm...

Ok. Double check test pipe connections for exhaust leak. That i'd definitely check for sure. Also, get rid of that BPV..please.. I'm going to be pissed if you put your stocker back on and start magically seeing 15psi+. There's a lot of damn ports on that XLE BOV. I can only imagine something is leaking there or not holding.

Another easy test you can try. Try letting your car idle, then pull the vacuum hose off the BPV. Your idle should immediately start to chug and bog. That's a good thing. According to Turbosmart, you can check to see if a vacuum line is messed up by doing this. If it continues to idle just fine without vacuum properly plugged in, there definitely is a problem.

 

[fuzzybmx]

I've put the stocker on and tried a firends stocker for the BPV as well and i still get the same problem. i'm going to go check the vacumm hose for the BPV right now. brb.

 

[Silver Ecstasy]

Ok. That's really weird though...

 

[fuzzybmx]

So I just pulled that hose and nothing changed.

 

[fuzzybmx]

yea the stcoker BPV from my friend was next to brand new.

 

[Silver Ecstasy]

The car didn't start idling rough at all??

You've definitely got something going on. You pulled the small hose right? Not the big one that recirculates back into the intake. The tiny vacuum hose.

From Turbosmart,

• With the engine running remove the vacuum / pressure hose from the nipple in the cap of the BOV, there should a loud hissing sound. The engine should idle poorly, double check by covering the end of the hose with your finger. If this does not occur, the hose could be blocked or crimped. Check the hose and replace if necessary.

 

[fuzzybmx]

yea it was the correct hose. I have have my boost gauge spliced in to that hose. I pulled that hose and plugged the hole and it didnt change anything.
The guy before me hooked the gauge up that way.

 

[fuzzybmx]

hey are you going to http://www.turbosmartonline.com/ and reading stuff off from there?

 

[Silver Ecstasy]

http://www.turbosmartonline.com/index.php?s=troubleshooting

 

[fuzzybmx]

I can still feel that hose sucking.

 

[Silver Ecstasy]

Not sure what to do then. Dealership time. Demod the car and datalog.

 

[fuzzybmx]

well i am still going to check the MAF like you suggested ealier.
thank you for the help!!

 

[Silver Ecstasy]

No prob!

You've never installed a Turbo Inlet Pipe right? You may have sucked something into the turbo that might have been in the CP-E Nano. Did you inspect and clean all the parts prior to installation?

I've seen some wild things, that might be something to consider looking into..

 

[Silver Ecstasy]

No prob!

You've never installed a Turbo Inlet Pipe right? You may have sucked something into the turbo that might have been in the CP-E Nano. Did you inspect and clean all the parts prior to installation?

I've seen some wild things, that might be something to consider looking into..

 

[fuzzybmx]

I did not check the intake before installing it. I've had it installed for over a year now. Ive had the AP for about 4 months now. but I will open it and take a look and all the piping. And no I have not install a turbo inlet pipe. but i will take that off and look as well. thanks again man!

 

[Silver Ecstasy]

When I purchased my PG inlet (and my COBB inlet), both were pretty dirty. So I had to clean it out just to make sure nothing got sucked in. Otherwise, that's logically the only other thing I can think of.

This car is pretty damn complex. Besides checking hardware, there's a whole other world of electronics that could interfere (ie. if you have the steering wheel turned, it'll dial back boost).

The one thing i'll say is, the car is load based. You really shouldn't be making a ton of boost if you're cruising in 3rd gear at 4500rpm and go WOT to try and generate some quick fun. Higher load will command higher boost. I'd try datalogging:

3rd Gear/3000-3500rpm
-RPM
-Absolute Throttle Position
-AFR
-Boost
-WGDC

As you go WOT, your throttle should open up (however much the AP lets it). Monitor your AFR's, make sure they're atleast touching 12's or so. You should see your WGDC #'s shoot up to 100 real fast which is also good. But as you're WOT, it'll start to dial back how much boost it wants to create. It should never go 0 during WOT.

So..to recap:

-Check hoses
-Check BPV
-Check intake and exhaust
-Clean MAF
-If you feel brave, follow the "how-to's" on installing a TIP. Check vacuum lines and possibly tighten the stock TIP (it's been known to be loose).
-Datalog afr's (could be running lean/boost cut)

If not, you've got an issue for sure. Unfortunately, I have no idea at this point lol. Dealership will definitely need to take a look at the car. And make sure you go with them on the test drive, have them sit in the passenger seat with their equipment. Have them monitor specific points at specific rpms. But....uninstall that AP before you do anything please.

 

[fuzzybmx]

thank you for the list! i will check in to these tonight after work. I really appreciate all your advice and help on this!

 

[fuzzybmx]

hey also what is a TIP?

 

[Silver Ecstasy]

Turbo Inlet Pipe - part that connects your intake to the turbo.

 

[fuzzybmx]

oh that thing. I've taken it off and put that thing back on. and the rubber piece on it looks like it coming off or pulling away from the tube . its hard to explain. but I know it doesn't look right. but I plan on pulling it off and putting it back on with a another bracket to hold on it.