Help no boost

[Mineral///M4]

Hello all,

The other night it seemed as if my Agency Power exhaust seemed louder, anyway a day later when I went to romp on it the car did not take off as it should. No codes. My mechanic has looked over as many of the vacuum likes as he can get to. He pulled the under belly off and was able to see that the vacuum lines were still attached to the wastegate. He stared that the other wastegate was hard to see however he used a mirror to be able to see that the vacuum line was attached also. He said that the wastegate that he could see looked as if everything was fine with it. My 09 has 145k miles. It has a Jb4 with piggy back and the iPhone app. Burger intakes, oil catch can, down *****. Vsrf Charge pipe w/ HKS BOV, Alpina transmission flash, AA intercooler, Fuel it stage 2 LPFP, ST coilovers. Please advise what I should have him check next. My car has no issues & has always preformed as it should with all these fun mods. I put this same post on n54tech also. Thank you all for viewing this post.

Thanks,
b

[Dat Aus]

If you're certain there are no vacuum leaks, it could be the boost solenoids. Consensus is that they should pretty much be changed as service items.

[RsPhi135]

I've have had this problem before where my car would have 0 boost. the car had no codes and ran perfectly fine minus the no boost.
the first few 10-15 minutes of driving, my car was 100% full boost. but as soon as it warmed up and jb4 fully activates. the car all of a sudden gets loud and no boost, i couldn't access the jb4 steering wheel menu during that time, but when the car was cold i was able to access the jb4 menu.
turned out the JB4 was the problem, got a new one and the car has been amazing.

[Mineral///M4]

Oh, I feel like I have read another post that sounded similar. Did you have to pay full retail for the new JB4?

[mike@x-ph.com]

Originally Posted by Alpine1

Oh, I feel like I have read another post that sounded similar. Did you have to pay full retail for the new JB4?

If you are the original JB4 owner, it will be covered under warranty (assuming that it is defective)

[dm874]

It could also mean that your chargepipe disconnected. Check the connections at the intercooler/chargepipe areas. This has happened to me before

[tmfstyle]

Originally Posted by dm874

It could also mean that your chargepipe disconnected. Check the connections at the intercooler/chargepipe areas. This has happened to me before

Agree check charge pipe first.

[Dat Aus]

Originally Posted by dm874

It could also mean that your chargepipe disconnected. Check the connections at the intercooler/chargepipe areas. This has happened to me before

Originally Posted by tmfstyle

Agree check charge pipe first.

Without question, a disconnected/blown charge pipe would trigger a 30FF code. It's probably worth checking (always start with the simplest things first) but I would be absolutely stunned if the charge pipe is the cause without throwing a code.