Lmk if wiring your wg thing works out for u. If it does then I'll try on mines too. My car doesn't feel like it's only on 22 psi(feels a lot stronger), but the gauge is only saying 22 psi. Sometimes 24 psi.

My buddy is running the same boost solenoid and same turbo as me and he's able to see 28 psi on his gauge. But his gauge is different from mines.

Our tuner has been extremely busy so he doesn't have time to datalog either. He was tuning 5 cars including mines at the same time. I Love that street tune. And it's free so no complaints on my end.

 

Well, I used zip ties but it didn't work. So I think that eliminates the waste gate or the boost solenoid as the issue. I think it's either still a big boost leak, or a hot side leak. I'm hoping for boost leak. If it's the hot side, it could be leaking from a number of hard to get to places and would require taking off the turbo which I don't want to do. I'm not sure how to test for a hot side leak though.

 

U can use seafoam. If it leaks from anywhere along the turbo to the muffler, the smoke from seafoam will pour out. I did it on mines and I was leaking from my exhaust manifold.

 

Update: it turns out that my wastegate actuator is kinda messed up. I adjusted my rod all the way till it was the shortest that it could possibly be(I did it little by little and tested the car in between) but in the end, I finally saw 29psi on my aem boost gauge. I also attached my mitsubishi factory boost gauge and they both were reading dead on. So my gauge was working fine the whole time. It was my actuator that wasn't allowing me to build boost. Now just gotta get my afr's to be a little better and I should be good.

 

I'm glad you figured yours out!
I had to pull my actuator to get it over the flapper so I don't think that's my issue, unfortunately.

 

That really sucks. I hope u find your issue. I was driving without the ability to boost for 8 months. I drove it bec I loved driving the car even though it wasn't able to boost. But I did wanna trash the whole car at times. Have u retuned your car to the new turbo yet?

 

I never took the hta71 off since the new build.
I know how you feel though, I've driven it to work several times just to drive it, it's so much fun even on 13psi.

 

If your not tuned for the new turbo then that may be your problem.

 

I would think though that if it would build 20psi on the Evo 4 turbo with an engine basically running on 1 real cylinder then on an engine with great compression an HTA71 should be able to hit that especially with the waste gate ziptied shut... But you could be right I do have S2 cams in it now

 

So I did another boost leak test, I have a bit of a leak at the J pipe, other than that it didnt seem to be all that bad though, not enough to be dropping all of my boost over wastegate.. then I took a look at the hotside, found that the 2 rear bolts on the turbo to manifold flange were somewhat loose, they werent crazy loose or anything, and i havent heard any exhaust leaks.
I tightened them up as tight as I could get them but I didn't gain any extra boost. Kind of bummed. I think the big boost leak may be into the oil or straight out of the compressor housing or something. I really hope its not the latter.

 

That really sucks. I'm pretty much stumped at this point on my car too. I just got a new wastegate actuator yesterday and shortened the rod and installed it and still only saw 26 psi. I have my stock boost gauge and my aem boost gauge and they're both pretty close to each other's numbers so I know here accurate. I want 33 psi but can't get it. I'm so bummed. I spent a lot of $$$ hoping to get 33 psi and see 480-490 hp. I hope you get your figured out. I'm gonna go do a boost leak test, get a retune, and hopefully get a datalog run. I want 33 psi badly. I'll update when I do this just I case both of my gauges were off or if my tune didn't make it to 30 psi like It was suppose to.

 

Seafoamed it but I didn't really find much out, I couldn't see where it was coming from exactly and keep the engine running/revving while it sucked the stuff up.
There's definitely an exhaust leak somewhere around the turbo, but I think it's at the O2 housing. I could be wrong. So in summation. I figured out nothing lol

 

If smoke is coming from there then that could be your issue. It shouldn't leak from there at all. At least that's what I came to find out.

 

U could take most of it off or losses them n re tighten them making sure it's flush. That's what I did too.

 

I have another 10.5 hotside that isn't cracked at all. I wanted to save it to put it on a green at some point but I think I may just take the turbo off, and swap the hotsides on it and I will get the ARP studs/bolts for this FP manifold. I had to drill out one of the bolt holes on the hotside so I just stuck a regular 8.8 bolt through it from Lowes, Im sure that stretched the second it got hot and created a leak.

If this doesn't fix it it has to be the turbo. I may not get to it for a bit though because my 240 is leaking powersteering fluid so I need to get that fixed and some other stuff worked out on it so I can get that car registered and driving every day. As soon as that's done The turbo is coming off the Evo.