Maxboostrx7

Ok, Everything is installed correctly, and it worked for last 1 and half yr.... i capped hose and everythin.
like today i checked hoses.. they are not loose or anything.. any idea? but even though "off" mode it goes up more than 15psi.. it suppose to be like 6psi ~ 7psi..

Any idea? please help!

Maxboostrx7

maybe i have busted vac hoses?

R Xplicit

is the solenoid for the avc-r still good. if it is bad, the wg line will be open and there will be a minimal amount of boost bled. do you run a mid pipe?

Maxboostrx7

yes, i run a mid pipe.. hmm.. i still can't find what is wrong with it... seems like everything is fine but boost is out of control.. : (...

Mahjik

iTrader: (1)

Do a search for "boost creep".

Maxboostrx7

Thanks for reply.. but i couldn't find any valuable information yet... i am planning to replace all the vac hoses on solenoid

IAN

iTrader: (3)

If your running straight exhaust and intake your just running past the effiency of the stock waste gate.

Ian Skacel
88 10th AE

Speedie7

Maxboost:

Im having terrible overboost problems today as well.
Couple questions for you (forgive the ignorance), which could help me out too:

1. Where does the AVCR solenoid control presure in the wastegate control lines? Near the actuator, or close to the wastegate control solenoid?

2. What model year are your turbos? Have they been replaced?

2. Do you have any restrictor pills in your wastegate lines?

3. IS

Kahren

iTrader: (13)

check to see if your wastegate actuator opens the wastegate, it could be that that hose popped off or something in that area

Speedie7

Yeah, it could very well be the hose going from the turbo housing into the wastegate actuator. Maybe somebody could answer me this: What could happen if one vented the line leaving the wastegate actuator, going up to the wastegate solenoid? Would it overboost or go to 7 psi?

Maxboostrx7

Damn it.. i just relplace all the vac hoses around wastegate and actuator.. still overboosting.. it will go easily 15psi +++ at "OFF" mode on AVC-R setting..
I don't know what the problem is... should i replace whole wastegate? please help me.. i blew my motor cuz overboosting last time when i installed avc-r wrong.. i paid $5500 core exchange engine from MAZDA..
PLEASE HELP ME!! i did research.. but i couldn't find any good information..

THANKS

Aristo

iTrader: (8)

Apply 7 psi with a hand pump to the inlet to the wastgate actuator and see if it moves. I guess this test is done while clamping the end going to the factory solenoid?

Mahjik

iTrader: (1)

The problem is boost creep. With a midpipe, you are overloading your wastegate and that is something a boost controller can do NOTHING about.

Here are about your only options:

1. Port the wastegate
2. Add restrictor plates to the exhaust
3. Put a cat converter back on

Check this message thread for more info:
https://www.rx7club.com/forum/showth...threadid=26389

Maxboostrx7

Thanks for reply... ... but thing is why does it all the sudden?? i used AVC-R for more than 1yr.. and i never had problem like this.....

FstFD3SPOWER

will it be better if u get racing wastegate? (HKS)

thansk

R Xplicit

the wastegates on on your turbos are internal. you can not add an external one w/o a **** load of effort and time. not to mention that it woiuld not be feasible.

check the avcr solenoid. i had one go bad and the unit could not regulate the boost.....

neevosh

Where was your solenoid mounted? If i was close to the turbos, it might have gotten damaged from all the heat. Also, did you test your actuator to make sure it's working?

Maxboostrx7

they are mounted far away from turbo.. i will try to get picture of it.. how do test my actuator is working?

p.s i was driving interstates.. this Rice boy (integra GSR) try to race me.. LOL.. i couldn't get on boost.. so i lett him go.. he was smillin.. thought he was won or something..

thanks for reply!!

Maxboostrx7

Just replaced all the AVCR solenoid.. still over boosting (primary went to 1.1 bar today).. what else problem would be?? PLEASE HELP ME..

poss

iTrader: (5)

since it overboosts even when off, i would say that it is the precontrol or wastegate sticking, or the actuators not working correctly. have you tried manually moving both of the parts above? have you tested the actuators?

Maxboostrx7

Thanks for reply ISUposs! how do i test the actuators? Thanks again!

poss

iTrader: (5)

i actually don't know for sure as I haven't ever had this type of problem, but you could probably hook a "mityvac"or similar to put a vacuum on the actuator to see if it moves. that's my best suggestion.

Maxboostrx7

Maybe some Vac hoses loosing??? still haven't figure out this problem yet... Please help me!!

maxcooper

The wastegate wouldn't open at all, so you would get huge overboost. Both of the nipples on the actuator go to the same chamber, so the vent would prevent pressure from building in the actuator and opening the wastegate. The stock setup has pressure going into one nipple through a restrictor pill, and the other hose venting air through the solenoid to regulate the pressure in the actuator.

-Max

Maxboostrx7

max so what is solution? time for new wastegate or?