Does anyone on here know how to install a mbc the right way without throwing a code. And what psi can an untuned x be set at. It appears that several people on here do this differently. Any advice.

 

Boost source to wastegate.
I havent thrown a CEL yet.

 

Just so i understand you correctly. Did you leave the factory boost selonoids conected and run the MBC in line with them, or did you dissconect them? What psi did you set the MBC at? Thank you.

 

Here is the photo i used to connect mine.

you will disconnect the stock boost controller and loop it back to itself.

run your MBC from the waste gate to the spot where UICP comes off the turbo.

I ended up pluging the extra vent on the intake as it was not needed. Hope this helps. and set it at like 23-24 spike. youll have fun and be safe. it will run arround 20 to redline. (thats what im doing)

 

Thank you. here is the pic of the boost controller hooked up to itself. the line from the intake was plugged too. here is the link This should help anyone who has any confusion after reading the last how to install an MBC write up.


http://s140.photobucket.com/albums/r...controller.jpg

 

i think i over boosted and threw a code because of it I set it yesterday in 98 degree teps. Its 69 and rainy her . I had it set for a peak of 25 psi in 98 weather it got cooler and the air got more dese and i threw a P1235
Fuel Pump Control Out Of Range code. the CEL came on then when out of gear it would idle a 2k. i shut it of and restarted it and the thing idle fine. I turned boost down a max of 23psinow. anything ever happen to anyone?

 

Yes, this is the typical CEL problem that every evo X has with running a MBC. It is caused by running too much boost at partial throttle. Reset your ecu and it goes away. It's a pain.

 

I have this same problem? Is there any solution to this?

 

I just put my mbc on yesterday, and left the solenoid to intake hose in place and left the hose to uicp turbo inlet open to atmosphere. No codes or problems after driving a little over 60 miles between yesterday and today.