With out check valves i get 5 psi with check valves 3 is this normal

thanks

 

How are you getting 5psi w/o check valves?

 

the t3/ is set at 5 psi as per boost gauge i've been boosting for a little over a month now.

 

Well without check valves, using a stock ECU, you are going to get a check engine light at around 0.5psi.

 

^^^^that's what I was gonna say. What's your fuel managment?

 

check light comes on irregularly sometime i bring it to 4 psi with out check light,in 2nd and 3rd gear then check light comes on i tested it all day yesterday,it weird,this just a temp till i chipp and program and tune.


thanks

 

just get a missing link

 

12:1 fmu and 190 walboro.

 

Don't boost on the car until you get the fuel system ironed out.

 

Honestly the car when not in boost runs fine just like stock not rich at all from what the a/r gauge tells me anyways egt never gets past 1100 degrees/cdn term i know it not reliable set but with the 190 pump and 12:1 vortech i should be fine at that boost,also with check valve the does not runn rich just not getting the boost with out.

 

Get a missing link.

 

12:1 fmu for now
190 walboro pump
Exedy cerematalic clutch and presure plate %72 over stock
Egt guage
Air fuel guage
Boost/Vacuum gauge
Stock Motor
2.25" cat back
2.25" down pipe
T3 turbo (volvo)
Magna flow exhaust
(5) psi for now
21x9x3 intercooler
B series manifold ss auto (I know) budget
3" k&n filter 2.50 intercooler pipes
Chrome BOV
High flow cat /car sound
Ngk plug 1 (colder)
Stock wires

 

Ok well:

1) Get a missing link. This will solve your check valve problem.

2) Get a high-pressure inline pump (like the airtex pump that comes with the drag kit). The walbro you have cannot create enough pressure for the FMU to work correctly.

 

Oaky,thanks dam,more money if i went with a 255 walboro would that make a difference just curious.

thanks alot!

 

It would help but you can still lean out w/ the 255.