R33 Boost Creep At Higher Revs

[4rdr33]

Hi guys, need some advice, i just recently got my skyline through a good friend of mine. Problem i am running into is bad boost creep as the revs go up. I put a manual boost controller on to see if it would help to maintain it but no luck, and it plays around with the ecu as it try to adjust so it getting slow spots through the rev range. If i put the standard solenoid back on, will it sturdy the boost as it was designed to do, or is there another issue, i have checked for boost leaks and replaces lines, but still the same. The line running the wastegate is one that the charcoal canister usually runs too. any help would be great on the topic

Thanks

Josh

[StealthX]

Get a decent boost source.

teeing a line from the evap canister is not a good way to control boost, and is most likely the source of your problem.

Use the nipple off the compressor housing or get a hose barb welded into your intercooler piping.

[JonnoHR31]

a boost controller cannot lower boost, only raise it. try running a new vac line directly from a boost source to the actuator with nothing else running off the same line

[4rdr33]

so where abouts is the nipple off the compressor housing, is it under the heat cover of the turbo. Anyone have a pic of this

[gotRICE?]

I didnt realise the stock turbos had a nipple?

What kind of dump pipe do you have?

If its a splt dump, it could be the issue. I had alot of problems with boost creep on my R33 with the split design. Even after having it ground down and fixed with the old wategate flapper issue. I put the stock one back on and it went away immediately.

Ended up having a custom bellmouth style made up instead and its still fine.

[4rdr33]

Do you lose much power by putting the stock one back on, and what's the bellmouth one, how is it different. Still new to turbo car. This is the setup that came on the car. I'm not bothered about running standard boost, I would put standard solenoid on if I new it would work, or ebc.

[R3N3]

Do you lose much power by putting the stock one back on, and what's the bellmouth one, how is it different. Still new to turbo car. This is the setup that came on the car. I'm not bothered about running standard boost, I would put standard solenoid on if I new it would work, or ebc.

check out just jap here, youll be better off getting a 3" bellmouth then going back to the standard item. also a good ebc helps aswell, i am a big fan of the jaycar item its cheap and has some great reviews.