well i just installed my brand new tial mvr 44mm and its like im hitting a brick wall at 8lbs of boost.. what could be my issue??? i installed the springs for 1.4bar which is 20psi .. as soon as i go to get on the boost my car hits fuel cut


motor: built
turbo: hta86 /ron shearer t3 manifold / factory facing not forward facing
ecu: aem ems
ignition: buschur cdi
fuel: br double pumper/ fic 2150's/stm fuel pressure regulator

 

stumped ya all?

 

if your hitting fuel cut, sounds like a tune issue

 

emery tuned it at stm there should be no tune issues with just installing a new wastegate..

 

Tune problem more than likely

 

once again its not the tune.. i had a tial on my car last week with zero issues...

 

you said you JUST installed the mvr and your hitting fuel cut. now your saying you had it on there for a week and it was fine?

if emery tuned the car, call him and ask him. fuel cut is messed with in the ECU, so obviously it is a tune issue

 

no never said i had that same wastegate on my car last week.. i had an old version tial 44mm on my car prior with zero issues.. now i replaced that with a mvr and i have the issue..

 

oh okay thats what i thought you meant.
were you using the same spring pressure on the old one as your new one?
what are you using to control boost?

 

yes 1.4 bar... hallman pro

 

do i plug up this port as well follow the black arrow..

 

is it 8 or 19psi you are hitting cut because you've told me two very different boost levels.

manual boost controller? leave both of the top ports open

 

sorry dint update the thread.. got the car to 19lbs yesterday and thats when i have issues... so i have it right now then i plug all the bottom air ports not used , leave the two top open.. brb going to take the car for a spin

 

not fixed still hitting fuel cut.... 8lbs is the max i can get the car to ... do you think the 1.4bar is to big or not enough?

 

i think you have one of the following issues:
something in the ECU changed
leak in the boost gauge line
leak in the signal line to/from gate

fuel cut is ecu controlled - if you are only getting 8psi there is no way the computer would cut you off

can you hear the gate opening?