Hey all.

I recently took out my Hallman Manual to return it to stock. My buddy and I (A Tuner on here who shall remain nameless) are going to try controlling the boost with the stock boost control solenoid. Now, here are the problems:

Car will only boost to a max around 13 psi. Now, I know this is a little more than the usual 11 psi of the wastegate spring, but, I have double and triple checked all the connections, and found no problems. Basically, I have tons of silicone hose laying around, so I routed all new lines.

I have a hose running from the turbo outlet nipple, to a tee. One other side of the tee is connected to the wastegate, and lastly, the other side of the tee goes to the nipple on the boost control solenoid closest to the actual electrical connector. The other nipple on the solenoid is connected to the nipple on the intake.

Now, I really can't figure out why this is only causing me to boost no more than 13 psi. Do you have to use the stock lines, or can you run all new lines like I did?

What might be the problem? I checked per my service manual the vacuum line routing and it's hooked up exactly like it says. I also checked the resistance of the solenoid per the service manual and it checked out fine as well.

Soo, any ideas or suggestions as to why it's doing this?

(Disclaimer: Yes I searched. Yes I looked at tons of pictures on here, even the Install section. Yes I have a sevice manual, and consulted that as well. If you tell me to put the hallman back in, I am going to set your face on fire and put it out with a wet brick. Please, only offer HELPING advice and/or point me in the direction I need to go. Thanks.)

 

how about swapping boost control selenoids with another evo? Did you reset the ECU?

 

That's exactly what I am trying to do now, but the hard part is finding someone who has one that will let me play with it, and has it in a readily accessable location.

Yes, the ECU was drained because I had the battery disconnected while working on a bunch of other things as well.

 

you can only use the stock lines with the stock restrictor pill for the stock silenoid to work properly.

 

This is already a very common thing done through flashes (EcuTek, TechTom, EcuFlash), so nothing new there unless you're talking about something else cool.

That's your problem right there. You can _ONLY_ use the stock OEM boost lines, because they have restrictor pills. Also, if you're seeing 13psi on the boost gauge, then it is likely off by 2psi, since base WG pressure is 11psi as you already stated.

I'm surprised that in all your searching, you didn't see the hundreds of times we've given this same answer concerning the stock boost lines. Btw, if you don't have them anymore, they are $14.55 from Mitsubishiparts.net. I have the actual part # listed in another thread that can be found through searching, too (I forget where it is exactly).

 

IMO a Map sensor is the only accurate way to tell that the boost really is. My Defi gauge is way off what my map sensor tells me. 2 PSI is not uncommon. So you are most likely seeing just wastegate pressure. Put the stock lines on.

 

I was wondering that about the base wastegate pressure. Mine seems to be a little higher than that of other evo's. We tried the same thing on a 9, and two other 8's and mine seems to want to run around 12-12.3 average. The 12.8 was the max under a 2nd gear quick pull. The actual psi is being recorded by a Greddy Profec B Spec II that's not controlling boost. It was, but now is only hooked up to read the max recorded psi readings so I can correlate them to my gages to see how close they are.

OK, so the stock lines have restrictors in them, I knew this, and I figured that it would come down to this.

Anyhow, a slight rebuttle to your "searching", I have found that it is quite hard to search on this particular forum because of the massive amounts of people that can't spell a damn thing right. Besides, some people call it a boost controller, a solenoid, etc... So, How am I suppost to search for what you call tomato and I call tamato? I do my fair share of searching, and only post as a last result. It might be explained by my very low number of posts.

 

I agree on the fact that people here cannot spell and have horrible grammar. There are always exceptsions of course. It's one of the biggest problems I have when trying to search as well.

 

MN143555 Here ya go I found the part number, you can probably pick them up from a local mits dealer. You can also order htem from mitsubishiparts.net for $15

 

Very unlikely to find them in stock at a local dealer. Just order from Mitsubishiparts.net.

As for searching, I didn't chastise you or say that you should have done it. I was just surprised that you DIDN'T find it in all of the searching you did do. We've had countless threads where people were only seeing 11psi and had no clue why. Each time, it was the same thing - didn't have the restrictor pills.

Not sure why you'd think your EBC's gauge is accurate either. It's not a MAP sensor, so it's no more accurate than any other boost gauge. There's no particular reason your WG would run so much higher, especially in 2nd gear, unless you've adjusted the turnbuckle on the WG arm.