StuntMAn

iTrader: (6)

Okay, I've been searching and I've found tons of good info. The only problem is I have no clue what is going on! All I can say is the car was driving fine this morning, this afternoon while driving home I had to suddenly accelerate to take my exit, boost was still normal. Got off freway and stopped at light, light turns green and I noticed that my car is only boosting 5-6psi. Next light I take off a bit hard to check it out again and only 5-6psi till 5000rpm then POW 18psi till redline...I checked all hoses and everything if fine, my car has been in its current state for a few months w/no problems. I'm thinking the wastegate might have been stuck??? anyone have this happen to them?

engine mods:
vf22/upgraded injec./pump
ecutek
txs fmic
apexi short ram
gruppe-s up/helix dp/ tanabe catback

Oh, I've checked out the wastegate and it seems to open and close fine, I also checked out the boost solenoid and it seems fine.

Just fishin for some clues here....

Kevin M

iTrader: (12)

It's definitely a wastegate issue. Either your boost solenoid is malfunctioning or the wastegate itself is hanging up.

StuntMAn

iTrader: (6)

Well ,I'm guessing the next step would be to take the dp off and check the internals. Any ideas on how to check the solenoid for a malfunction?

Kevin M

iTrader: (12)

Borrow one from a friend.

mmboost

iTrader: (2)

Here are some things I tried in ruling out such problems before confirming I needed to port the wastegate. (I'm not saying you need to port, since I dunno if vf22s suffer the same problems that vf34s do... anyhow...).

- With the car off, put a compressor to the actuator and see if it moves. Just give it the normal absolute pressures you'd find coming out of your compressor under boost... so like 20 to 30 PSI. The actuator arm should move forward and you prolly could hear the gate snap shut when you cut the pressure. If the actuator arm doesn't move, the actuator is prolly faulty

- borrow someones working stock solenoid. very easy to remove and install. if the problem goes away, your solenoid is prolly the culprit.

- if the actual flapper of the gate was broken, you probably pushed it out your 3" tail pipe

jason

StuntMAn

iTrader: (6)

Just wanted to thank you guys for all the good info....

Found out the problem!! It was from the TXS receric BOV that came with the FMIC. The little valve inside was stuck, I noticed this while I was taking off the piping to make room so I could get to the turbo. So I took off the BOV completly apart and sanded any rough spots inside & smoothened it up a little, added a few washers to make the spring a bit stronger. Took the car for a drive and no-mo-problems ......The End......

mmboost

iTrader: (2)

thats unsettling...

GasPipe DreameR

iTrader: (1)

im from pleasanton

ride5000

i assume you did lube the bov before refitting?

StuntMAn

iTrader: (6)

dabbed a bit of unused motor oil on the valve

kettsupp

iTrader: (1)

hey man how is the vf22 with the turboxs fmic?..i was thinking about doing that next to my car..how bad is the lag?

StuntMAn

iTrader: (6)

lag is not really noticable(+200rpm at most) , I say go for it...My top end has improved way more than when i had the txs tmic.