lowering boost

[GoldZenkiS14]

ok i bought a turbo with a stock internal wastegate which is set to 10 psi. Does any one know how i can go about lowering the boost to 7?? im guessing im going to have to shorten the rod or somthing on the actuator?? anyone know? any easy trick to do it other than buying an external wastegate .. let me know please .. thanksCarlos

[huguetpj]

If you cut the rod then you WILL increase lag. There was a hold thread about this some time back... I'm just to lazy to look it up... maybe u should :pface

[PMan_S13]

You can't really get the boost lower than what the wastegate is set at. You can raise it pretty easily but not lower.

Only real thing to do is get another actuator. I might have a plan for you. I run 10psi from my 7psi actuator with a MBC. Send me an email to [email protected]. Maybe we could make a deal to trade or something, so long as they fit the same.

[GoldZenkiS14]

i tried searching for "lowering boost wastgate" and i dont get anthing useful... wouldnt makes it longer make it sta closed long in tern raising or lowering boost? and then cutting it and making it shorter would make it lower boost lowere i would guess since it owuld open sooner?? .. my turbo is an ihi turbo off of a thunderbird coupe and i donno what other actuators would work what ttype do u ahve pman?

[PMan_S13]

I have a garret turbo. Actuators are pretty much universal so long as they bolt on to the turbo fine.

I'm not sure on length, but the actuator itself is probably about 7-9 inches long and bolts onto the turbo with 2 studs on the actuator and a little fabbed up flange.

I'll see if I can get a pic and some dimensions

[huguetpj]

i tried searching for "lowering boost wastgate" and i dont get anthing useful... wouldnt makes it longer make it sta closed long in tern raising or lowering boost? and then cutting it and making it shorter would make it lower boost lowere i would guess since it owuld open sooner?? .. my turbo is an ihi turbo off of a thunderbird coupe and i donno what other actuators would work what ttype do u ahve pman?

Try internal wastegate lower

Yes your right. Making it lower does increase top boost without affecting spool since the gate is closed. BUT shortening will lower top boost and affect spool since the gate will be opened at idle.

[GoldZenkiS14]

ok kool man thanks alot for the link .. pman thanks for the offer im going to try this first and ill get back to you thanksCarlos