okay. just the other day i installed an IPD boost control valve on my t6 s80. as of now it is still limiting boost to a measly 4psi. i have driven it a number of times and thought that it has had enough time to get into the system and relearn everything. has anyone else used this product and noticed the same actions?? how much longer do i need to run this item and just figure that it is "just learning"??? any input appreciated. thanks

 

i have a TCV that i haven't installed yet. there should be no learning that i know of. are you sure you have it installed correctly? what boost were you capable of?

 

yeah.. called IPD.. they said it may take a day or 2 before it runs properly.. still boosting to 4 or 5 psi. and when you switch to an aftermarket bcv there is a learning process. dont know why... but when i switched some lines due to pictures not being clear it overboosted. and then went to limp mode which gave me max of 7psi. so ive switched it back like they suggested and am waiting for my bad *** s80 to wake up.....

 

i have performed their relearn procedure twice now and still only 4 psi.. either i have a bad control valve or i have a bad power or control to it. is the control valve closed at normal operation and then open to release boost pressure to the wastegate or is it the other way around? im trying to figure out how i could check my control of the solenoid. i could have a wiring problem. there is only 2 wires to the control (positive and comp ground during activation) so the only way the ecu is going to know that its not commanded a certain way is by the boost pressure sensor.. im assuming. does anyone have a way to check that? i have noid lights and dvom and test light but no VADIS or large lab scope, nor does alldata give a proper procedure on checking the circuit...

 

Are you participating in this thread? The IPD guys are on there. http://forums.swedespeed.com/zerothread?id=104225

 

no but ive called them and man.. good call on your part.. im getting the same exact boost levels with my ipd unit in, and then when i switch back to my oem im getting 15 psi or so.. hrm. . so i definately will be giving them another call ... 4 psi of boost when youre expecting 18 or so is not appeasing at all.. so ill repost with whatever i come up with in a couple of days.. thanks a bunch vegas skater jet boy..

 

day off is tomorrow.. ill let the wife take the S4 and ill be working on this one all day.. ill confer with IPD and repost my findings and repairs tomorrow evening..

 

so now it seems as though im not getting proper ground to bcv. IPD rep says that the solenoid should be closed with engine running but when i check it then im getting 10 volts using the ecu ground and then as soon as i plug it in to the IPD unit it drops to next to nothing. then the rep at UPSOLUTE says that it is a variable ground and that it will not be a set value. .kinda like a rehostat. so i dont know where to go to find problem. car is running with 16psi and im happy with that but its not just right so im frustrated. i have the unit completely overlooked.

 

Very strange.
IPD cannot give you anymore info?

 

okay tech.. this is what ipd told me.. that 4 to 6 psi means that the valve is open, and in turn the valve allows flow, and the wastegates actually will open with 6 psi. so went to check the voltage and ground and stuff and this is what i found. checking the boost valve connector B+ with a good known ground and i got 13.7 with car running, which is good. then i checked the computer controlled signal (which supplies ground to the circuit) and a good B+ supply and i was registering only 10 volts, which means that im not getting a good ground. then i checked ground with the ipd unit plugged up and i got .15 volts, which is hardly enough to actuate a solenoid. so i then began to wonder if i had high resistance built up in a wire or a loose ground connector on the car that was supplying the ecu with a poor ground. i traced the comp control wire from the boost control valve to the ecu and was getting the same voltage there, which showed me i had no bad wires but i was registering the ground that the ecu was supplying. so then i thought maybe i have a bad ecu, or the upsolute tune that was performed was done poorly. so i called Rene Berube from upsolute usa and he said that my findings where interesting but the ground that the ecu supplies is variable, so just because i was receiving what i thought was a sub-par ground, it may have been just as the computer was designed to. so the ecu controls the resistance to ground for the control of the boost control valve. which sounds hokie to me. i thought it would just be an on/off type of operation, but again, im not a turbo whizz or even an ME7 whizz.. im completely lost, and it seems that me finding someone that will shoot me straight or knows exactly how ME7 theory and operation goes down is not gonna happen. i mean i spend literally 3 hrs on the phone at a time and hear the same stuff i coulda guessed or i thought happened myself.... i need to speak with someone who knows exactly how my ecu fulfills processes and procedures.

 

IM not a 100% wiz either but from what I know the valve will pulse when it sees to much boost it will pulse to drop the boost down.
I don't think it is an on and off thing. If that as the case then you would either always run full boost or have none at all.

It has to be a signal problem in communication between IPD and upsolute items. If all is fine with the IPD part bypassed then it is a communication problem between the 2 of them.

 

okay.. tech.. this is what im going to do. i didnt notice this problem at all until i had the converters gutted and straight pipes run so back pressure is gone and boost spools up quicker. so what im going to do is reinstall my oem boost controller, get a new converter assembly and reinstall it. then im going to drive the car and see if i get my 18 to 19 psi back. if that is the case then ill test both exhaust configurations on a dyno and quarter mile runs to see which provides the best performance. and ill talk to IPD about getting me a new valve or resolving the issues i have with this one. and again, this is me talking about my boost problem period, not the IPD unit. it could be possible that the ecu sees boost spool up to fast and doesnt like that at all. i dont know if at wot and a certain rpm it allows higher boost, and then when i had the exhaust work done it just noticed too much boost too early in the rpms.. ehhhh. its driving me nuts..

 

I can understand how it would bother you.
That might be a problem. But didn't it boost fine after the exhaust work before the controller?

 

no.. i think right after on the long stretch home it seemed less, but i didnt make a big deal about it or even think about it till it was repeated trips and still not getting 18 psi of boost.. i was just excited about the instant turbo spool up time..

 

Oh ok I will be waiting for the update.