Low boost on twin turbo?
Low boost on twin turbo? Finally got my twin turbo setup driving and now I have ran into my next issue. I'm running 8.5 wastegate springs and with my eboost2 I can't get any more than 7.5-8 pounds of boost no matter what I change in the controller. Any idea what the issue could be? Setup is twin 67mm with 44mm wastegates
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Joined: Nov 2003
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From: Norn Iron
Finally got my twin turbo setup driving and now I have ran into my next issue. I'm running 8.5 wastegate springs and with my eboost2 I can't get any more than 7.5-8 pounds of boost no matter what I change in the controller. Any idea what the issue could be? Setup is twin 67mm with 44mm wastegates
same response with every such query.
Draw a schematic of exactly how YOUR setup is configured.
Turbos, signal lines, solenoids, wastegates, everything relating to boost control.
Not how you think it is configured, or how an instruction manual says. How yours is, look at it, draw it out.
It will help you and us diagnose any problems.
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I initially had it pressure source to port 3, bottom of the wastegates to port 2, port 1 vent. Yesterday I hooked it to bottom wastegate and source port 1, top wastegate port 2, port 3 vent which had the same outcome. I unhooked the bottom of the wastgates at the controller and let them vent and boost went past 12 and I let off?
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Verdad Gallardo 9 Second Club
Joined: Nov 2003
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From: Norn Iron
Both the first method you described and the latter method you posted on the other forum are fine.
The physical installation sounds to be correct.
The problem will lie with the controller settings.
As said elsewhere, set all gains etc to a low value or zero, ensure the overboost cut is not so low as it will activate and work with the setpoint duty to achieve the desired boost level you want.
Then you can take things from there
The physical installation sounds to be correct.
The problem will lie with the controller settings.
As said elsewhere, set all gains etc to a low value or zero, ensure the overboost cut is not so low as it will activate and work with the setpoint duty to achieve the desired boost level you want.
Then you can take things from there
Well it looks like my controller may be bad. Talked with turbosmart tech support today and they say my solenoid is suppose to click when turning the key on which mine of course does not. Checked the wiring and it does have continuity
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Joined: Nov 2003
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From: Norn Iron
It's possible, but it would be rare.
I had one faulty one years ago, but it just wouldnt save any settings. Every time power off it reset to default.
As for the solenoid clicking, they pulse it at a fairly high frequency, so any time Ive pressure tested them you need a scope to test the output as you just cannot feel or hear the solenoid pulsing.
I had one faulty one years ago, but it just wouldnt save any settings. Every time power off it reset to default.
As for the solenoid clicking, they pulse it at a fairly high frequency, so any time Ive pressure tested them you need a scope to test the output as you just cannot feel or hear the solenoid pulsing.
I really don't know, I know that I definitaly don't hear or feel a pulse and can't get it to work. I raised my sp value from 0-55 and it made no change what so ever. I've been messing with it all week and only time I can get more boost is if the controller is disconnected?
I planned on doing tuning at the dyno this weekend and looks like that isn't happening, They said since they are in cali its going to take at least 1 1\2 weeks to get it back when I send it out.
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From: Norn Iron
Unhook the solenoid and try to blow into the normally closed port...it should be...closed lol
ie no other pipes attached.
Apply some pressure to the EBoost head unit signal line so it see's positive pressure, adjust setpoint duty to say 50 or so. The solenoid should be pulsing and you should be able to blow through it
You probably will not feel or hear the pulsing.
ie no other pipes attached.
Apply some pressure to the EBoost head unit signal line so it see's positive pressure, adjust setpoint duty to say 50 or so. The solenoid should be pulsing and you should be able to blow through it
You probably will not feel or hear the pulsing.
Yes, system off with all lines off the solenoid I can blow through port 2 and it comes out port 3 and vice versa, port 1 I can't blow through. With pressure applied to the controller I can here the solenoid humming
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From: Norn Iron
If it does the above then the controller is working