Well, it's good that the dealership replaced the hoses, but it doesn't sound as if they used the OEM Mitsu boost hoses. Without the exact OEM hoses, you won't get the proper boost.

It seems that most dealerships don't even have a clue that this part exists, but it's only $14.50, so it's a terribly simple thing to purchase and fix. I have a brand new stock set in my garage just in case I ever need them, since I damage my original hoses when installing my first MBC. You should call them and tell them you need them to order this exact part number, then install it:

MN143555

AFter that, you should see 1.3-1.4 bar regularly in gears 3-6.

 

Will do tomorrow Thanks!!!

Man what a difference from .5 to 1 bar. Can't wait to see 1.3

 

Since you are in the orlando area just go over to forge and get one of there boost controlers.

 

Talk to Shawn the service manager tell him i sent you(Miguel) and tell him that you need new stock boost hoses. I think mine are there laying around somewhere

 

Thanks Miguel,

I went Monday, spoke with Shawn, and a couple of hours later, he said he replaced them all. Now, I am only getting 1 bar. I called him back and left him a VM. Dont know what to do.

Jason

 

That's the thing. He can't just "replace them all." HE should be installing ONE THING. It's all one bug unit. IT's not multiple hoses that you go find and put together. It's one thing that comes in one bag with all the attachments you need.

 

Were do you live? We can meet up this weekend and i can take a look at it if you want. Let me know

 

Hey Thanks,

I live in Clermont, but I can meet you anywhere

 

We can meet up saturday or sunday, let me know and i can look at the car, my friend had the same problem and i fixed it for him...

 

if he had a mbc he probably had other mods too....check the uicp licp bov.....everything.... and check the blinker fluid, that might be low

 

Well, I replaced the OEM boost lines myself, and I figured out what the deal was..... Whoever had the car before me SUPERGLUED the line from the "T" to the Boost Control Solenoid. The plug on the BCS wasnt even on. It was gluded. I can't believe it. Should I even bother aruguing with the dealer, or just buy a new one myself?

 

Yes, argue with the dealer. I don't know what "gluded" means, but if you're saying the BCS nipple is sealed or something, then definitely ***** at the dealer.

 

I'm going to try. Glued as in the 'nipple' of the BCS broke off with the line still on it, so they tried to glue it back together.

My deal is, I was fed up with the BCS, so I installed a MBC. I'm not sure if I should just take in the part, or put everything back to 'stock' and go in and play dumb. UGH!

 

Well, you don't want it broken. They shouldn't have sold it that way, but they probably didn't know.

 

Bump to remind people of the part number for the OEM boost hoses (and so that I can find it more easily in the future):

MN143555

If anyone is only seeing ~11-12psi on their recently-purchased (or recently modded) used Evo, then you probably need to buy these hoses from Mitsubishiparts.net or get an MBC.