boost problem and im lost .

[jsu1012]

hks bov stuck open. bought a tial bov , no more problems. thanks everyone for the help.

[ultimateirving]

I too have the rs3871 with the Isis wgA and do not experience this phenomenon. My boost comes on full at about ~3800 rpms. I run mine at about 19-20 psi.

[jsu1012]

changed out the turbo.

[s14boy]

ask what their spring is rated for that could alswer some questions for you if its for 15 psi you cant make it open at a lower pressure only a higher pressure with the bc.

not sure if this is the answer to what you are trying to get at its just what i interpreted your problem as.

Hope it helps
-Mike

[jsu1012]

bought a adj wastegate. didn't fix the problem.

[rcdad123]

check your exhaust down pipe. make sure the hole for the waste gate flapper is not obstructed. if it is, it will not by pass enough exhaust volume to limit the turbine speed. another thing to check is the length of the waste gate actuator arm. if it`s too short, the flapper won`t fully open.

[jsu1012]

check your exhaust down pipe. make sure the hole for the waste gate flapper is not obstructed. if it is, it will not by pass enough exhaust volume to limit the turbine speed. another thing to check is the length of the waste gate actuator arm. if it`s too short, the flapper won`t fully open.

im sure the downpipe is fine. but i'll check it . hmm the wastegate arm might be to short. thats a very good point. i'll switch that with a longer one i have on the bench. thanks for input. i'll post with results.