Rev 2 turbo is reaching 14PSI boost just on the (standard) actuator.
TVSV is blanked off, boost controller switched off, should only be about 7PSI I thought? Didn't always do this, only since back together with rebuilt engine.
Only difference I can think of is the exhaust cam was retarded 6 degrees but don't know that would do it.
What could cause this?
[Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
Moderators: IMOC Moderators, IMOC Committee Members
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
decatted? other mods?
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
Didn't think cold weather would affect it to that extent?
It is decatted, other mods that may be relevant are mongoose (I think) exhaust, CT20b, bigger side mount, enclosed induction kit.
Could the boost controller solenoid be faulty? Might be worth trying with it out?
It is decatted, other mods that may be relevant are mongoose (I think) exhaust, CT20b, bigger side mount, enclosed induction kit.
Could the boost controller solenoid be faulty? Might be worth trying with it out?
-
- IMOC Affiliated Trackday Organiser
- Posts: 10506
- Joined: Tue Jan 25, 2005 9:49 am
- Location: South Yorkshire
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
toecutter wrote:CT20b
CT20 actuator I presume?
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
its creeps there due to the free flow setup
ie wastegate is too small.
restricting exhaust should bring boost down.
ie smaller exhaust, restrictor ring etc
or just learn to deal with it.
mine creeps, i just learn to run high boost
i assume it probably holds 7psi for a time, then slower creeps up top end
ie wastegate is too small.
restricting exhaust should bring boost down.
ie smaller exhaust, restrictor ring etc
or just learn to deal with it.
mine creeps, i just learn to run high boost
i assume it probably holds 7psi for a time, then slower creeps up top end
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
I believe it is the CT20 actuator, turbo was on car when I bought it.
Next time I take it out I'll watch the boost to see if it is creeping up, I only took notice of what it was peaking at. I plan to run about 15PSI on boost controller anyway so if it is creep it's not too much of a problem.
Next time I take it out I'll watch the boost to see if it is creeping up, I only took notice of what it was peaking at. I plan to run about 15PSI on boost controller anyway so if it is creep it's not too much of a problem.
-
- IMOC Affiliated Trackday Organiser
- Posts: 10506
- Joined: Tue Jan 25, 2005 9:49 am
- Location: South Yorkshire
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
toecutter wrote:I believe it is the CT20 actuator, turbo was on car when I bought it.
Well that's set higher than the CT26 actuator in any case. A CT20 decatted with freel flow exhaust will often hit 13psi as normal.
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
Didn't know that, thanks
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
My ct20b actuator was 7psi.
So were the ones tested by Gaz.
Still see what you get.
So were the ones tested by Gaz.
Still see what you get.
-
- Posts: 257
- Joined: Mon Jun 29, 2009 11:59 pm
- Location: Chorley, Lancashire
Re: [Mk2] [Turbo] Reaching 14PSI on actuator alone Rev 2
I have a ct20b on my rev2, hit 15psi on the actuator alone with an exhaust restriction. Ran a full 3" system and would hit 16psi on actuator, higher on cold days which would make it hit fuel cut even though I have a greddy fcd (apparently meant to remove cut but it doesn't)