horse power question

[95talley]

1995 gst with turbo restrictor removed,joe p boost controller, running 14lbs boost,cold air intake,3"down pipe and apex exhaust, greddy ic piping. im looking for guess on hp im going to the dyno monday,i have a o2 housing w/ the dump pipe but im not sure what that really does for yeah? im going to the dyno monday dsm:

 

[plymouthtalon]

200 to the wheels.

By the way you should be running 14 lbs with no boost controller with the restrictor removed, or at least mine does.

 

[95talley]

are you still running the stock o2 housing? i installed the boost controller to turn the boost down to 14 it was at 17

 

[plymouthtalon]

um... i thought boost controllers could only raise boost. Maybe that's MBCs, i don't know about electronic ones. Anyway o2 housing's stock.

 

[95talley]

well when i first hooked it up and went for a test run the good ole boost gauge swung over to 25psi so i had to pretty much completely close the mbc to get it down to 14

 

[talonted_one]

.

um... i thought boost controllers could only raise boost. Maybe that's MBCs, i don't know about electronic ones. Anyway o2 housing's stock.

Any boost controller can raise or lower boost.

well when i first hooked it up and went for a test run the good ole boost gauge swung over to 25psi so i had to pretty much completely close the mbc to get it down to 14

Your boost may do that depending on how the conroller was initally set

 

[95talley]

i do have a question when i unhooked the vac lines from the turbo and the w/g the one vac the that you dont use what do you do with that just put a screw in it to block it off or what??? also im seeing 10lbs at 1/4 to 1/2 throttle just driving normal. seems like there is just that one postion for it to start boosting and the turbo is making a loud woooosh sound....i mean it will boost up at real low rmp`s.. how ya like the sound effects

 

[DSMJim]

Originally posted by talonted_one
.

Any boost controller can raise or lower boost.

Thats technically incorrect. Your boost can not be lowered below what your wastegate is set to, a boost controller can only raise boost higher than initial spring rate. If the lowest setting on a car is 11psi stock and that is what our wastegates are set at (dont even know since I ditched the stock turbo so quick) then you can only raise boost.