Whats going on?

[90flipgst]

Ever since i changed the exhaust and did the M.A.S mod, my car peaks at about 20 psi and and spikes to 22 psi. i do not have a boost controller on it at this time .during the full boost the air fuel is still reading rich, but is there a reason for this? This is my commuter car so I need it as reliable as possible. also for higher boost what is a good setting for the timing? thank you for any help.

 

[Froyd79]

check that you hooked up your BCS correctly and also that you line is still on your wastegate.

 

[yoshimitsuspeed]

Ever since i changed the exhaust and did the M.A.S mod, my car peaks at about 20 psi and and spikes to 22 psi. i do not have a boost controller on it at this time .during the full boost the air fuel is still reading rich, but is there a reason for this? This is my commuter car so I need it as reliable as possible. also for higher boost what is a good setting for the timing? thank you for any help.

What kind of exhaust?
You are most likely dealing with boost creep. Do a search on it to find info.
I was going to give you a quick rundown but I am too tired. there is a lot of info on it here though.

 

[Thomas91169]

running that high of boost prolly isnt a good thing. more than likely you are dealing with boost creep, which is a long and drawn out story, do a search and learn more than i can tell you. perhaps you can buy a boost controller that will more adequately control boost than the stock bcs. i remember when i got my exhaust it raised boost from 12 to 15(on a 2nd gen turbo, youre 1g 14b is alot better) and i got a boost controller and was able to turn it down to 11.

as for timing, your ecu controls that, nothing really you can do.