Have a IX MR, running stock boost lines, have Perrin intake w/ an Agency Power BOV, have the WORKS P1 flash, which all they did was adjust the A/Fuel ratios for hte intake, they didnt touch the boost at all and they said it is suppossed ot be good w/ stock boost setup. The car is not even the same, I cannot hit over 1.0-1.1, about 15 PSI ,....and that is with A LOT of effort. Car only has like 1,300 miles on it,........took it to MITSU, they hooked up hte computer, drove it around a couple of times, said it wasnt throwing codes and the WG, Turbo and BOV was good, said 15 PSI was within tolerance,..........WTF,.........

Everything seems to be tight, got to be laeking from somewhere though,.......someone said sounds like just wastegate,......anyone else w/ this setup on a IX have this problem, because 3 of my co-workers have modded 8's all w/ intakes and etc.etc and have no problems like this..........Will be doing a pressure test this weekend, once I make one.......

ANy suggestions are welcome, thank you.

 

check your intercooler hosing the ones down low. On my 8 it would only hit 15 psi because the clamps on my hose's were completely off check it out, hope that fix's the problem.

 

Last time you posted this, we said to PROPERLY reinstall the MBC you already have and see if the problem persists. Have you done that yet?

 

Nope. Works said I do not need a MBC att and that it will work fine w/ a stock boost setup.

 

I purchased one of those small telescoping mirrors yesterday, and with it noticed that the bottom part of my intake it not seated properly on my turbo outlet............at this point I am not counting on this being my sole problem, but I will fix it today..............

 

1. Contact Works and work this out with them. They have excellent customer service.

2. Send your ECU back to Works and have flash it back to the stock settings.

m~

 

Yeah, I have talked w/ WORKS a few times, all they did was adjust the A-F ratios for the intake, did nothing to the boost,.............said it should be working fine w/ stock setup.............car ran smooth after the ECU was flashed, just losing boost somewhere.............I really do not believe going back to stock is going to solve this problem,..........plus then I have just wasted like 900 bucks, plus more $$$ for shipping again and no car for a couple days.

 

The first thing that I would do is put your stock IX bypass valve back on and see if that helps. Maybe the aftermarket BOV is not set right and is leaking when you're on boost. Plus, the IX bypass valve is one of the best out there, its the same as a 1g DSM valve (design wise), no need for a flashy aftermarket one.

If you said that you do not have any leaks + all that Works did was reflash the ecu, then I would not know why you're not getting proper boost values. Like others have said, check your IC hoses if you have not checked them already, although a boost leak would also make your car stumble under heavy load and run pig rich. Check anyway, could be as simple as a leaky upper IC hose.

How I would go about locating the boost problem:
-Check all IC hose connections for leaks
-Install stock bypass valve
-Run a direct hose from the turbo nipple to the wastegate actuator nipple
-Cap off stock wastegate solenoid

Running this setup, the car will not boost past what the wastegate allows. If you know the pressure that the actuator opens the wastegate at, you will have a solid steady boost value to go off from, none of that variable stuff the wastegate solenoid does. From here, run the car under heavy load. If your boost gauge does not read the same value of when the wastegate opens at, then you have a problem. However, if you have matching boost values between your gauge and the actual pressure that it will take to open the wastegate, you should be fine.

This process is a double edged sword, however. If your wastegate opens before the threashold of when your piping leaks, then you would not know if you have a leak or not, since the pressures will match. But, if your wastegate opens at a really high boost level which exceeds the threashold of when your piping starts to leak (i.e. MBC installed), then the pressure in the pipes should not exceed that threashold no matter how must boost you try to turn it up. Then, this would tell you that you have a leak, Boost gauge pressure < Calculated MBC boost value.

 

Why would that keep you from following my suggestion? Of course it should work fine with stock boost, but you obviously screwed something up when you did the MBC install originally. I said to try reinstalling the MBC, because that may uncover your problem. It's a troubleshooting method. YOu won't figure out anything sitting here on the forum; you could have already figured it out by doing some actual troubleshooting.

Anyway, your intake does not touch the turbo outlet. The intake connects to the MAF, which connects to the MAF pipe, which then connects to the turbo INLET. This entire system must be sealed for things to work properly.

It's truly unfortunate that you took a perfectly good Exo IX and decided to install a needless intake, a useless BOV in place of an already-great BOV that most of us VIII owners have as an upgrade, and then a $900 (was it really that expensive???) flash with the result being a screwed up Evo that's only 1 month old.

 

its either the MBC, stock sloenoid or a boost leak. take out the MBC and just run a hose from the wastegate to a pressure source and cap everything else. basically run a hose from the wastegate actuator to the lower pipe and thats it, BUT BE CAREFUL!! IF THE PROBLEM WAS THE MBC OR THE STOCK SOLENOID, THE CAR WILL NOW OVER BOOST, BUT YOU WILL SEE IT AS YOU WATCH THE BOOST GAUGE AND IF IT GOES UP TO 20 OR MORE, JUST LET OFF.

thats the easiest and quickest way. if you have a leak somewhere in your piping/connectors then you'll see the boost hit around 15 psi and you'll either hear it leaking or the car will be the same as it is now. i'm thinking its either the mbc or stock solenoid though.

if you want to take a more professional approach get a boost leak tester and hook it up and see if the system can hold 30 psi without leaking. if it doesnt then it a pipe/connector. if it does then you must have a problem with your MBC/stock solenoid.

 

The MBC is not mine, I do not have it anymore.......I gave it back when my ECU came back from getting flashed. I made sure the intake was flush w/ the turbo outlet today, and tightened it,.....made no difference. It is not the BOV, aftermarket or stock one, because I just installed the aftermarket one yesterday and it made no difference. Intake was 200, flash was 600, + overnight shipping,.......

MItsubishi had it for a couple of hours, hooked up the computer to it, .said everything was fine, and they could not find a problem, said 15PSI was within tolerance......

I do not have much time to troubleshoot till saturday, I am trying to build a pressure tester as we speak,..........If I can borrow the MBC, where do you hook the lines into, what gets capped off, etc,........

 

Talked to WORKS, advised me to put my CAI back to stock, I notice a drastic improvement, like a totally different car,................they said the computer might take 30-40 miles to get used to the stock one again,...........anyways,.....do not have much time right now,.........will update

 

I tried to warn way back when you first introduced yourself, but I guess now you're learning the hard way...